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Finding the Fourth Proportional to 15,535.80, 23,319.90 and 8,974.80

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Solution

The fourth proportional to 15,535.80, 23,319.90 and 8,974.80 is: 13,471.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,535.80 : 23,319.90 = 8,974.80 : x
  2. Step 2: Convert to fraction form
    15,535.80/23,319.90 = 8,974.80/x
  3. Step 3: Cross multiply
    15,535.80x = 23,319.90 × 8,974.80
  4. Step 4: Simplify right side
    15,535.80x = 209,291,438.52
  5. Step 5: Solve for x
    x = 209,291,438.52/15,535.80
  6. Step 6: Final answer
    x = 13,471.56

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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.