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Finding the Fourth Proportional to 19,491.20, 29,265.60 and 15,113.60

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Solution

The fourth proportional to 19,491.20, 29,265.60 and 15,113.60 is: 22,692.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,491.20 : 29,265.60 = 15,113.60 : x
  2. Step 2: Convert to fraction form
    19,491.20/29,265.60 = 15,113.60/x
  3. Step 3: Cross multiply
    19,491.20x = 29,265.60 × 15,113.60
  4. Step 4: Simplify right side
    19,491.20x = 442,308,572.16
  5. Step 5: Solve for x
    x = 442,308,572.16/19,491.20
  6. Step 6: Final answer
    x = 22,692.73

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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.