Home / 31,434.75-47,157.45-15,640.65

Finding the Fourth Proportional to 31,434.75, 47,157.45 and 15,640.65

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Solution

The fourth proportional to 31,434.75, 47,157.45 and 15,640.65 is: 23,463.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,434.75 : 47,157.45 = 15,640.65 : x
  2. Step 2: Convert to fraction form
    31,434.75/47,157.45 = 15,640.65/x
  3. Step 3: Cross multiply
    31,434.75x = 47,157.45 × 15,640.65
  4. Step 4: Simplify right side
    31,434.75x = 737,573,170.34
  5. Step 5: Solve for x
    x = 737,573,170.34/31,434.75
  6. Step 6: Final answer
    x = 23,463.62

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1.5x scale

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.