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Finding the Fourth Proportional to 15,137.70, 22,710.60 and 13,505.55

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Solution

The fourth proportional to 15,137.70, 22,710.60 and 13,505.55 is: 20,261.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,137.70 : 22,710.60 = 13,505.55 : x
  2. Step 2: Convert to fraction form
    15,137.70/22,710.60 = 13,505.55/x
  3. Step 3: Cross multiply
    15,137.70x = 22,710.60 × 13,505.55
  4. Step 4: Simplify right side
    15,137.70x = 306,719,143.83
  5. Step 5: Solve for x
    x = 306,719,143.83/15,137.70
  6. Step 6: Final answer
    x = 20,261.94

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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.