Home / 21,406.60-32,034.30-18,663.40

Finding the Fourth Proportional to 21,406.60, 32,034.30 and 18,663.40

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Solution

The fourth proportional to 21,406.60, 32,034.30 and 18,663.40 is: 27,929.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,406.60 : 32,034.30 = 18,663.40 : x
  2. Step 2: Convert to fraction form
    21,406.60/32,034.30 = 18,663.40/x
  3. Step 3: Cross multiply
    21,406.60x = 32,034.30 × 18,663.40
  4. Step 4: Simplify right side
    21,406.60x = 597,868,954.62
  5. Step 5: Solve for x
    x = 597,868,954.62/21,406.60
  6. Step 6: Final answer
    x = 27,929.19

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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.