Home / 31,428.66-47,132.98-10,364.78

Finding the Fourth Proportional to 31,428.66, 47,132.98 and 10,364.78

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Solution

The fourth proportional to 31,428.66, 47,132.98 and 10,364.78 is: 15,543.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,428.66 : 47,132.98 = 10,364.78 : x
  2. Step 2: Convert to fraction form
    31,428.66/47,132.98 = 10,364.78/x
  3. Step 3: Cross multiply
    31,428.66x = 47,132.98 × 10,364.78
  4. Step 4: Simplify right side
    31,428.66x = 488,522,968.44
  5. Step 5: Solve for x
    x = 488,522,968.44/31,428.66
  6. Step 6: Final answer
    x = 15,543.87

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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.