Home / 20,752.40-31,128.63-5,957.88

Finding the Fourth Proportional to 20,752.40, 31,128.63 and 5,957.88

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Solution

The fourth proportional to 20,752.40, 31,128.63 and 5,957.88 is: 8,936.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,752.40 : 31,128.63 = 5,957.88 : x
  2. Step 2: Convert to fraction form
    20,752.40/31,128.63 = 5,957.88/x
  3. Step 3: Cross multiply
    20,752.40x = 31,128.63 × 5,957.88
  4. Step 4: Simplify right side
    20,752.40x = 185,460,642.10
  5. Step 5: Solve for x
    x = 185,460,642.10/20,752.40
  6. Step 6: Final answer
    x = 8,936.83

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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.