Home / 31,711.23-47,532.62-20,625.91

Finding the Fourth Proportional to 31,711.23, 47,532.62 and 20,625.91

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Solution

The fourth proportional to 31,711.23, 47,532.62 and 20,625.91 is: 30,916.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,711.23 : 47,532.62 = 20,625.91 : x
  2. Step 2: Convert to fraction form
    31,711.23/47,532.62 = 20,625.91/x
  3. Step 3: Cross multiply
    31,711.23x = 47,532.62 × 20,625.91
  4. Step 4: Simplify right side
    31,711.23x = 980,403,474.92
  5. Step 5: Solve for x
    x = 980,403,474.92/31,711.23
  6. Step 6: Final answer
    x = 30,916.60

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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.