Home / 15,122.70-22,688.10-13,490.55

Finding the Fourth Proportional to 15,122.70, 22,688.10 and 13,490.55

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Solution

The fourth proportional to 15,122.70, 22,688.10 and 13,490.55 is: 20,239.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,122.70 : 22,688.10 = 13,490.55 : x
  2. Step 2: Convert to fraction form
    15,122.70/22,688.10 = 13,490.55/x
  3. Step 3: Cross multiply
    15,122.70x = 22,688.10 × 13,490.55
  4. Step 4: Simplify right side
    15,122.70x = 306,074,947.46
  5. Step 5: Solve for x
    x = 306,074,947.46/15,122.70
  6. Step 6: Final answer
    x = 20,239.44

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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.