Home / 20,500.17-28,290.24-11,547.68

Finding the Fourth Proportional to 20,500.17, 28,290.24 and 11,547.68

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Solution

The fourth proportional to 20,500.17, 28,290.24 and 11,547.68 is: 15,935.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,500.17 : 28,290.24 = 11,547.68 : x
  2. Step 2: Convert to fraction form
    20,500.17/28,290.24 = 11,547.68/x
  3. Step 3: Cross multiply
    20,500.17x = 28,290.24 × 11,547.68
  4. Step 4: Simplify right side
    20,500.17x = 326,686,468.32
  5. Step 5: Solve for x
    x = 326,686,468.32/20,500.17
  6. Step 6: Final answer
    x = 15,935.79

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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.