Home / 20,508.16-28,301.28-12,008.74

Finding the Fourth Proportional to 20,508.16, 28,301.28 and 12,008.74

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Solution

The fourth proportional to 20,508.16, 28,301.28 and 12,008.74 is: 16,572.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,508.16 : 28,301.28 = 12,008.74 : x
  2. Step 2: Convert to fraction form
    20,508.16/28,301.28 = 12,008.74/x
  3. Step 3: Cross multiply
    20,508.16x = 28,301.28 × 12,008.74
  4. Step 4: Simplify right side
    20,508.16x = 339,862,713.19
  5. Step 5: Solve for x
    x = 339,862,713.19/20,508.16
  6. Step 6: Final answer
    x = 16,572.07

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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.