Home / 21,245.27-31,867.89-6,454.13

Finding the Fourth Proportional to 21,245.27, 31,867.89 and 6,454.13

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Solution

The fourth proportional to 21,245.27, 31,867.89 and 6,454.13 is: 9,681.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,245.27 : 31,867.89 = 6,454.13 : x
  2. Step 2: Convert to fraction form
    21,245.27/31,867.89 = 6,454.13/x
  3. Step 3: Cross multiply
    21,245.27x = 31,867.89 × 6,454.13
  4. Step 4: Simplify right side
    21,245.27x = 205,679,504.89
  5. Step 5: Solve for x
    x = 205,679,504.89/21,245.27
  6. Step 6: Final answer
    x = 9,681.19

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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.