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Finding the Fourth Proportional to 15,250.80, 22,890.60 and 9,418.80

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Solution

The fourth proportional to 15,250.80, 22,890.60 and 9,418.80 is: 14,137.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,250.80 : 22,890.60 = 9,418.80 : x
  2. Step 2: Convert to fraction form
    15,250.80/22,890.60 = 9,418.80/x
  3. Step 3: Cross multiply
    15,250.80x = 22,890.60 × 9,418.80
  4. Step 4: Simplify right side
    15,250.80x = 215,601,983.28
  5. Step 5: Solve for x
    x = 215,601,983.28/15,250.80
  6. Step 6: Final answer
    x = 14,137.09

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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.