Home / 21,248.27-31,872.39-6,457.13

Finding the Fourth Proportional to 21,248.27, 31,872.39 and 6,457.13

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Solution

The fourth proportional to 21,248.27, 31,872.39 and 6,457.13 is: 9,685.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,248.27 : 31,872.39 = 6,457.13 : x
  2. Step 2: Convert to fraction form
    21,248.27/31,872.39 = 6,457.13/x
  3. Step 3: Cross multiply
    21,248.27x = 31,872.39 × 6,457.13
  4. Step 4: Simplify right side
    21,248.27x = 205,804,165.64
  5. Step 5: Solve for x
    x = 205,804,165.64/21,248.27
  6. Step 6: Final answer
    x = 9,685.69

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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.