Home / 28,642.97-42,948.69-15,331.58

Finding the Fourth Proportional to 28,642.97, 42,948.69 and 15,331.58

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Solution

The fourth proportional to 28,642.97, 42,948.69 and 15,331.58 is: 22,988.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,642.97 : 42,948.69 = 15,331.58 : x
  2. Step 2: Convert to fraction form
    28,642.97/42,948.69 = 15,331.58/x
  3. Step 3: Cross multiply
    28,642.97x = 42,948.69 × 15,331.58
  4. Step 4: Simplify right side
    28,642.97x = 658,471,276.63
  5. Step 5: Solve for x
    x = 658,471,276.63/28,642.97
  6. Step 6: Final answer
    x = 22,988.93

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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.