Home / 27,818.27-38,387.10-15,879.99

Finding the Fourth Proportional to 27,818.27, 38,387.10 and 15,879.99

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Solution

The fourth proportional to 27,818.27, 38,387.10 and 15,879.99 is: 21,913.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,818.27 : 38,387.10 = 15,879.99 : x
  2. Step 2: Convert to fraction form
    27,818.27/38,387.10 = 15,879.99/x
  3. Step 3: Cross multiply
    27,818.27x = 38,387.10 × 15,879.99
  4. Step 4: Simplify right side
    27,818.27x = 609,586,764.13
  5. Step 5: Solve for x
    x = 609,586,764.13/27,818.27
  6. Step 6: Final answer
    x = 21,913.18

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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.