Home / 21,098.85-31,649.90-6,306.63

Finding the Fourth Proportional to 21,098.85, 31,649.90 and 6,306.63

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Solution

The fourth proportional to 21,098.85, 31,649.90 and 6,306.63 is: 9,460.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,098.85 : 31,649.90 = 6,306.63 : x
  2. Step 2: Convert to fraction form
    21,098.85/31,649.90 = 6,306.63/x
  3. Step 3: Cross multiply
    21,098.85x = 31,649.90 × 6,306.63
  4. Step 4: Simplify right side
    21,098.85x = 199,604,177.30
  5. Step 5: Solve for x
    x = 199,604,177.30/21,098.85
  6. Step 6: Final answer
    x = 9,460.43

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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.