Home / 31,416.68-47,128.45-13,635.11

Finding the Fourth Proportional to 31,416.68, 47,128.45 and 13,635.11

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Solution

The fourth proportional to 31,416.68, 47,128.45 and 13,635.11 is: 20,454.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,416.68 : 47,128.45 = 13,635.11 : x
  2. Step 2: Convert to fraction form
    31,416.68/47,128.45 = 13,635.11/x
  3. Step 3: Cross multiply
    31,416.68x = 47,128.45 × 13,635.11
  4. Step 4: Simplify right side
    31,416.68x = 642,601,531.70
  5. Step 5: Solve for x
    x = 642,601,531.70/31,416.68
  6. Step 6: Final answer
    x = 20,454.15

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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.