Home / 31,461.80-47,209.19-12,743.82

Finding the Fourth Proportional to 31,461.80, 47,209.19 and 12,743.82

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Solution

The fourth proportional to 31,461.80, 47,209.19 and 12,743.82 is: 19,122.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,461.80 : 47,209.19 = 12,743.82 : x
  2. Step 2: Convert to fraction form
    31,461.80/47,209.19 = 12,743.82/x
  3. Step 3: Cross multiply
    31,461.80x = 47,209.19 × 12,743.82
  4. Step 4: Simplify right side
    31,461.80x = 601,625,355.99
  5. Step 5: Solve for x
    x = 601,625,355.99/31,461.80
  6. Step 6: Final answer
    x = 19,122.41

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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.