Home / 31,750.16-47,615.70-19,921.88

Finding the Fourth Proportional to 31,750.16, 47,615.70 and 19,921.88

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Solution

The fourth proportional to 31,750.16, 47,615.70 and 19,921.88 is: 29,876.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,750.16 : 47,615.70 = 19,921.88 : x
  2. Step 2: Convert to fraction form
    31,750.16/47,615.70 = 19,921.88/x
  3. Step 3: Cross multiply
    31,750.16x = 47,615.70 × 19,921.88
  4. Step 4: Simplify right side
    31,750.16x = 948,594,261.52
  5. Step 5: Solve for x
    x = 948,594,261.52/31,750.16
  6. Step 6: Final answer
    x = 29,876.83

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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.