Home / 20,332.91-30,487.31-6,288.78

Finding the Fourth Proportional to 20,332.91, 30,487.31 and 6,288.78

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Solution

The fourth proportional to 20,332.91, 30,487.31 and 6,288.78 is: 9,429.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,332.91 : 30,487.31 = 6,288.78 : x
  2. Step 2: Convert to fraction form
    20,332.91/30,487.31 = 6,288.78/x
  3. Step 3: Cross multiply
    20,332.91x = 30,487.31 × 6,288.78
  4. Step 4: Simplify right side
    20,332.91x = 191,727,985.38
  5. Step 5: Solve for x
    x = 191,727,985.38/20,332.91
  6. Step 6: Final answer
    x = 9,429.44

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1.5x scale

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.