Home / 22,649.85-31,234.55-20,861.91

Finding the Fourth Proportional to 22,649.85, 31,234.55 and 20,861.91

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Solution

The fourth proportional to 22,649.85, 31,234.55 and 20,861.91 is: 28,768.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,649.85 : 31,234.55 = 20,861.91 : x
  2. Step 2: Convert to fraction form
    22,649.85/31,234.55 = 20,861.91/x
  3. Step 3: Cross multiply
    22,649.85x = 31,234.55 × 20,861.91
  4. Step 4: Simplify right side
    22,649.85x = 651,612,266.68
  5. Step 5: Solve for x
    x = 651,612,266.68/22,649.85
  6. Step 6: Final answer
    x = 28,768.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.