Home / 21,178.14-31,766.64-5,595.90

Finding the Fourth Proportional to 21,178.14, 31,766.64 and 5,595.90

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Solution

The fourth proportional to 21,178.14, 31,766.64 and 5,595.90 is: 8,393.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,178.14 : 31,766.64 = 5,595.90 : x
  2. Step 2: Convert to fraction form
    21,178.14/31,766.64 = 5,595.90/x
  3. Step 3: Cross multiply
    21,178.14x = 31,766.64 × 5,595.90
  4. Step 4: Simplify right side
    21,178.14x = 177,762,940.78
  5. Step 5: Solve for x
    x = 177,762,940.78/21,178.14
  6. Step 6: Final answer
    x = 8,393.70

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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.