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Finding the Fourth Proportional to 28,411.38, 42,629.38 and 15,248.38

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Solution

The fourth proportional to 28,411.38, 42,629.38 and 15,248.38 is: 22,879.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,411.38 : 42,629.38 = 15,248.38 : x
  2. Step 2: Convert to fraction form
    28,411.38/42,629.38 = 15,248.38/x
  3. Step 3: Cross multiply
    28,411.38x = 42,629.38 × 15,248.38
  4. Step 4: Simplify right side
    28,411.38x = 650,028,985.40
  5. Step 5: Solve for x
    x = 650,028,985.40/28,411.38
  6. Step 6: Final answer
    x = 22,879.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.