Home / 28,281.17-42,417.87-15,654.28

Finding the Fourth Proportional to 28,281.17, 42,417.87 and 15,654.28

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Solution

The fourth proportional to 28,281.17, 42,417.87 and 15,654.28 is: 23,479.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,281.17 : 42,417.87 = 15,654.28 : x
  2. Step 2: Convert to fraction form
    28,281.17/42,417.87 = 15,654.28/x
  3. Step 3: Cross multiply
    28,281.17x = 42,417.87 × 15,654.28
  4. Step 4: Simplify right side
    28,281.17x = 664,021,213.98
  5. Step 5: Solve for x
    x = 664,021,213.98/28,281.17
  6. Step 6: Final answer
    x = 23,479.27

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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.