Home / 20,955.90-31,433.85-18,623.10

Finding the Fourth Proportional to 20,955.90, 31,433.85 and 18,623.10

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Solution

The fourth proportional to 20,955.90, 31,433.85 and 18,623.10 is: 27,934.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,955.90 : 31,433.85 = 18,623.10 : x
  2. Step 2: Convert to fraction form
    20,955.90/31,433.85 = 18,623.10/x
  3. Step 3: Cross multiply
    20,955.90x = 31,433.85 × 18,623.10
  4. Step 4: Simplify right side
    20,955.90x = 585,395,731.94
  5. Step 5: Solve for x
    x = 585,395,731.94/20,955.90
  6. Step 6: Final answer
    x = 27,934.65

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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.