Home / 31,891.10-47,810.73-11,129.18

Finding the Fourth Proportional to 31,891.10, 47,810.73 and 11,129.18

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Solution

The fourth proportional to 31,891.10, 47,810.73 and 11,129.18 is: 16,684.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,891.10 : 47,810.73 = 11,129.18 : x
  2. Step 2: Convert to fraction form
    31,891.10/47,810.73 = 11,129.18/x
  3. Step 3: Cross multiply
    31,891.10x = 47,810.73 × 11,129.18
  4. Step 4: Simplify right side
    31,891.10x = 532,094,220.10
  5. Step 5: Solve for x
    x = 532,094,220.10/31,891.10
  6. Step 6: Final answer
    x = 16,684.72

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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.