Home / 20,851.52-31,277.39-5,269.16

Finding the Fourth Proportional to 20,851.52, 31,277.39 and 5,269.16

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Solution

The fourth proportional to 20,851.52, 31,277.39 and 5,269.16 is: 7,903.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,851.52 : 31,277.39 = 5,269.16 : x
  2. Step 2: Convert to fraction form
    20,851.52/31,277.39 = 5,269.16/x
  3. Step 3: Cross multiply
    20,851.52x = 31,277.39 × 5,269.16
  4. Step 4: Simplify right side
    20,851.52x = 164,805,545.95
  5. Step 5: Solve for x
    x = 164,805,545.95/20,851.52
  6. Step 6: Final answer
    x = 7,903.77

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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.