Home / 31,740.78-47,614.34-11,755.65

Finding the Fourth Proportional to 31,740.78, 47,614.34 and 11,755.65

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Solution

The fourth proportional to 31,740.78, 47,614.34 and 11,755.65 is: 17,634.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,740.78 : 47,614.34 = 11,755.65 : x
  2. Step 2: Convert to fraction form
    31,740.78/47,614.34 = 11,755.65/x
  3. Step 3: Cross multiply
    31,740.78x = 47,614.34 × 11,755.65
  4. Step 4: Simplify right side
    31,740.78x = 559,737,516.02
  5. Step 5: Solve for x
    x = 559,737,516.02/31,740.78
  6. Step 6: Final answer
    x = 17,634.65

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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.