Home / 31,416.80-47,123.60-10,640.48

Finding the Fourth Proportional to 31,416.80, 47,123.60 and 10,640.48

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Solution

The fourth proportional to 31,416.80, 47,123.60 and 10,640.48 is: 15,960.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,416.80 : 47,123.60 = 10,640.48 : x
  2. Step 2: Convert to fraction form
    31,416.80/47,123.60 = 10,640.48/x
  3. Step 3: Cross multiply
    31,416.80x = 47,123.60 × 10,640.48
  4. Step 4: Simplify right side
    31,416.80x = 501,417,723.33
  5. Step 5: Solve for x
    x = 501,417,723.33/31,416.80
  6. Step 6: Final answer
    x = 15,960.18

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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.