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Finding the Fourth Proportional to 18,814.73, 25,959.15 and 11,641.20

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Solution

The fourth proportional to 18,814.73, 25,959.15 and 11,641.20 is: 16,061.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,814.73 : 25,959.15 = 11,641.20 : x
  2. Step 2: Convert to fraction form
    18,814.73/25,959.15 = 11,641.20/x
  3. Step 3: Cross multiply
    18,814.73x = 25,959.15 × 11,641.20
  4. Step 4: Simplify right side
    18,814.73x = 302,195,656.98
  5. Step 5: Solve for x
    x = 302,195,656.98/18,814.73
  6. Step 6: Final answer
    x = 16,061.65

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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.