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Finding the Fourth Proportional to 18,752.71, 25,879.19 and 10,686.19

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Solution

The fourth proportional to 18,752.71, 25,879.19 and 10,686.19 is: 14,747.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,752.71 : 25,879.19 = 10,686.19 : x
  2. Step 2: Convert to fraction form
    18,752.71/25,879.19 = 10,686.19/x
  3. Step 3: Cross multiply
    18,752.71x = 25,879.19 × 10,686.19
  4. Step 4: Simplify right side
    18,752.71x = 276,549,891.93
  5. Step 5: Solve for x
    x = 276,549,891.93/18,752.71
  6. Step 6: Final answer
    x = 14,747.20

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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.