Home / 21,070.56-31,605.83-6,279.10

Finding the Fourth Proportional to 21,070.56, 31,605.83 and 6,279.10

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Solution

The fourth proportional to 21,070.56, 31,605.83 and 6,279.10 is: 9,418.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,070.56 : 31,605.83 = 6,279.10 : x
  2. Step 2: Convert to fraction form
    21,070.56/31,605.83 = 6,279.10/x
  3. Step 3: Cross multiply
    21,070.56x = 31,605.83 × 6,279.10
  4. Step 4: Simplify right side
    21,070.56x = 198,456,167.15
  5. Step 5: Solve for x
    x = 198,456,167.15/21,070.56
  6. Step 6: Final answer
    x = 9,418.65

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Similar ratio
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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.