Home / 21,247.27-31,870.89-6,456.13

Finding the Fourth Proportional to 21,247.27, 31,870.89 and 6,456.13

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Solution

The fourth proportional to 21,247.27, 31,870.89 and 6,456.13 is: 9,684.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,247.27 : 31,870.89 = 6,456.13 : x
  2. Step 2: Convert to fraction form
    21,247.27/31,870.89 = 6,456.13/x
  3. Step 3: Cross multiply
    21,247.27x = 31,870.89 × 6,456.13
  4. Step 4: Simplify right side
    21,247.27x = 205,762,609.06
  5. Step 5: Solve for x
    x = 205,762,609.06/21,247.27
  6. Step 6: Final answer
    x = 9,684.19

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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.