Home / 28,432.40-39,237.02-15,686.04

Finding the Fourth Proportional to 28,432.40, 39,237.02 and 15,686.04

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Solution

The fourth proportional to 28,432.40, 39,237.02 and 15,686.04 is: 21,646.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,432.40 : 39,237.02 = 15,686.04 : x
  2. Step 2: Convert to fraction form
    28,432.40/39,237.02 = 15,686.04/x
  3. Step 3: Cross multiply
    28,432.40x = 39,237.02 × 15,686.04
  4. Step 4: Simplify right side
    28,432.40x = 615,473,465.20
  5. Step 5: Solve for x
    x = 615,473,465.20/28,432.40
  6. Step 6: Final answer
    x = 21,646.91

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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.