Home / 20,722.52-31,079.10-6,679.86

Finding the Fourth Proportional to 20,722.52, 31,079.10 and 6,679.86

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Solution

The fourth proportional to 20,722.52, 31,079.10 and 6,679.86 is: 10,018.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,722.52 : 31,079.10 = 6,679.86 : x
  2. Step 2: Convert to fraction form
    20,722.52/31,079.10 = 6,679.86/x
  3. Step 3: Cross multiply
    20,722.52x = 31,079.10 × 6,679.86
  4. Step 4: Simplify right side
    20,722.52x = 207,604,036.93
  5. Step 5: Solve for x
    x = 207,604,036.93/20,722.52
  6. Step 6: Final answer
    x = 10,018.28

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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.