Home / 28,432.49-39,237.01-15,686.12

Finding the Fourth Proportional to 28,432.49, 39,237.01 and 15,686.12

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Solution

The fourth proportional to 28,432.49, 39,237.01 and 15,686.12 is: 21,646.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,432.49 : 39,237.01 = 15,686.12 : x
  2. Step 2: Convert to fraction form
    28,432.49/39,237.01 = 15,686.12/x
  3. Step 3: Cross multiply
    28,432.49x = 39,237.01 × 15,686.12
  4. Step 4: Simplify right side
    28,432.49x = 615,476,506.18
  5. Step 5: Solve for x
    x = 615,476,506.18/28,432.49
  6. Step 6: Final answer
    x = 21,646.95

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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.