Home / 20,909.54-31,340.01-7,753.52

Finding the Fourth Proportional to 20,909.54, 31,340.01 and 7,753.52

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Solution

The fourth proportional to 20,909.54, 31,340.01 and 7,753.52 is: 11,621.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,909.54 : 31,340.01 = 7,753.52 : x
  2. Step 2: Convert to fraction form
    20,909.54/31,340.01 = 7,753.52/x
  3. Step 3: Cross multiply
    20,909.54x = 31,340.01 × 7,753.52
  4. Step 4: Simplify right side
    20,909.54x = 242,995,501.76
  5. Step 5: Solve for x
    x = 242,995,501.76/20,909.54
  6. Step 6: Final answer
    x = 11,621.27

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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.