Home / 20,359.79-28,098.83-12,402.02

Finding the Fourth Proportional to 20,359.79, 28,098.83 and 12,402.02

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Solution

The fourth proportional to 20,359.79, 28,098.83 and 12,402.02 is: 17,116.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,359.79 : 28,098.83 = 12,402.02 : x
  2. Step 2: Convert to fraction form
    20,359.79/28,098.83 = 12,402.02/x
  3. Step 3: Cross multiply
    20,359.79x = 28,098.83 × 12,402.02
  4. Step 4: Simplify right side
    20,359.79x = 348,482,049.13
  5. Step 5: Solve for x
    x = 348,482,049.13/20,359.79
  6. Step 6: Final answer
    x = 17,116.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.