Home / 28,191.90-42,288.54-9,472.59

Finding the Fourth Proportional to 28,191.90, 42,288.54 and 9,472.59

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Solution

The fourth proportional to 28,191.90, 42,288.54 and 9,472.59 is: 14,209.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,191.90 : 42,288.54 = 9,472.59 : x
  2. Step 2: Convert to fraction form
    28,191.90/42,288.54 = 9,472.59/x
  3. Step 3: Cross multiply
    28,191.90x = 42,288.54 × 9,472.59
  4. Step 4: Simplify right side
    28,191.90x = 400,582,001.12
  5. Step 5: Solve for x
    x = 400,582,001.12/28,191.90
  6. Step 6: Final answer
    x = 14,209.12

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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.