Home / 20,749.52-31,128.90-5,957.28

Finding the Fourth Proportional to 20,749.52, 31,128.90 and 5,957.28

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Solution

The fourth proportional to 20,749.52, 31,128.90 and 5,957.28 is: 8,937.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,749.52 : 31,128.90 = 5,957.28 : x
  2. Step 2: Convert to fraction form
    20,749.52/31,128.90 = 5,957.28/x
  3. Step 3: Cross multiply
    20,749.52x = 31,128.90 × 5,957.28
  4. Step 4: Simplify right side
    20,749.52x = 185,443,573.39
  5. Step 5: Solve for x
    x = 185,443,573.39/20,749.52
  6. Step 6: Final answer
    x = 8,937.25

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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.