Home / 19,904.09-27,456.23-12,439.13

Finding the Fourth Proportional to 19,904.09, 27,456.23 and 12,439.13

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Solution

The fourth proportional to 19,904.09, 27,456.23 and 12,439.13 is: 17,158.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,904.09 : 27,456.23 = 12,439.13 : x
  2. Step 2: Convert to fraction form
    19,904.09/27,456.23 = 12,439.13/x
  3. Step 3: Cross multiply
    19,904.09x = 27,456.23 × 12,439.13
  4. Step 4: Simplify right side
    19,904.09x = 341,531,508.10
  5. Step 5: Solve for x
    x = 341,531,508.10/19,904.09
  6. Step 6: Final answer
    x = 17,158.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.