Home / 31,640.13-47,473.29-13,861.60

Finding the Fourth Proportional to 31,640.13, 47,473.29 and 13,861.60

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Solution

The fourth proportional to 31,640.13, 47,473.29 and 13,861.60 is: 20,798.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,640.13 : 47,473.29 = 13,861.60 : x
  2. Step 2: Convert to fraction form
    31,640.13/47,473.29 = 13,861.60/x
  3. Step 3: Cross multiply
    31,640.13x = 47,473.29 × 13,861.60
  4. Step 4: Simplify right side
    31,640.13x = 658,055,637.98
  5. Step 5: Solve for x
    x = 658,055,637.98/31,640.13
  6. Step 6: Final answer
    x = 20,798.13

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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.