Home / 31,431.82-47,129.88-10,366.12

Finding the Fourth Proportional to 31,431.82, 47,129.88 and 10,366.12

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Solution

The fourth proportional to 31,431.82, 47,129.88 and 10,366.12 is: 15,543.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,431.82 : 47,129.88 = 10,366.12 : x
  2. Step 2: Convert to fraction form
    31,431.82/47,129.88 = 10,366.12/x
  3. Step 3: Cross multiply
    31,431.82x = 47,129.88 × 10,366.12
  4. Step 4: Simplify right side
    31,431.82x = 488,553,991.67
  5. Step 5: Solve for x
    x = 488,553,991.67/31,431.82
  6. Step 6: Final answer
    x = 15,543.29

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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.