Home / 20,955,036.30-31,432,554.45-18,435,612.30

Finding the Fourth Proportional to 20,955,036.30, 31,432,554.45 and 18,435,612.30

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Solution

The fourth proportional to 20,955,036.30, 31,432,554.45 and 18,435,612.30 is: 27,653,418.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,955,036.30 : 31,432,554.45 = 18,435,612.30 : x
  2. Step 2: Convert to fraction form
    20,955,036.30/31,432,554.45 = 18,435,612.30/x
  3. Step 3: Cross multiply
    20,955,036.30x = 31,432,554.45 × 18,435,612.30
  4. Step 4: Simplify right side
    20,955,036.30x = 579,478,387,438,839.75
  5. Step 5: Solve for x
    x = 579,478,387,438,839.75/20,955,036.30
  6. Step 6: Final answer
    x = 27,653,418.45

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.