Home / 13,490.20-18,614.22-7,520.56

Finding the Fourth Proportional to 13,490.20, 18,614.22 and 7,520.56

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Solution

The fourth proportional to 13,490.20, 18,614.22 and 7,520.56 is: 10,377.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,490.20 : 18,614.22 = 7,520.56 : x
  2. Step 2: Convert to fraction form
    13,490.20/18,614.22 = 7,520.56/x
  3. Step 3: Cross multiply
    13,490.20x = 18,614.22 × 7,520.56
  4. Step 4: Simplify right side
    13,490.20x = 139,989,358.36
  5. Step 5: Solve for x
    x = 139,989,358.36/13,490.20
  6. Step 6: Final answer
    x = 10,377.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.