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Finding the Fourth Proportional to 18,760.89, 25,889.71 and 10,377.39

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Solution

The fourth proportional to 18,760.89, 25,889.71 and 10,377.39 is: 14,320.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,760.89 : 25,889.71 = 10,377.39 : x
  2. Step 2: Convert to fraction form
    18,760.89/25,889.71 = 10,377.39/x
  3. Step 3: Cross multiply
    18,760.89x = 25,889.71 × 10,377.39
  4. Step 4: Simplify right side
    18,760.89x = 268,667,617.66
  5. Step 5: Solve for x
    x = 268,667,617.66/18,760.89
  6. Step 6: Final answer
    x = 14,320.62

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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.