Home / 18,781.27-25,910.07-10,818.76

Finding the Fourth Proportional to 18,781.27, 25,910.07 and 10,818.76

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Solution

The fourth proportional to 18,781.27, 25,910.07 and 10,818.76 is: 14,925.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,781.27 : 25,910.07 = 10,818.76 : x
  2. Step 2: Convert to fraction form
    18,781.27/25,910.07 = 10,818.76/x
  3. Step 3: Cross multiply
    18,781.27x = 25,910.07 × 10,818.76
  4. Step 4: Simplify right side
    18,781.27x = 280,314,828.91
  5. Step 5: Solve for x
    x = 280,314,828.91/18,781.27
  6. Step 6: Final answer
    x = 14,925.23

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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.