Home / 28,432.92-39,235.64-15,686.24

Finding the Fourth Proportional to 28,432.92, 39,235.64 and 15,686.24

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Solution

The fourth proportional to 28,432.92, 39,235.64 and 15,686.24 is: 21,646.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,432.92 : 39,235.64 = 15,686.24 : x
  2. Step 2: Convert to fraction form
    28,432.92/39,235.64 = 15,686.24/x
  3. Step 3: Cross multiply
    28,432.92x = 39,235.64 × 15,686.24
  4. Step 4: Simplify right side
    28,432.92x = 615,459,665.59
  5. Step 5: Solve for x
    x = 615,459,665.59/28,432.92
  6. Step 6: Final answer
    x = 21,646.02

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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.