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Finding the Fourth Proportional to 18,472.69, 25,491.25 and 10,919.71

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Solution

The fourth proportional to 18,472.69, 25,491.25 and 10,919.71 is: 15,068.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,472.69 : 25,491.25 = 10,919.71 : x
  2. Step 2: Convert to fraction form
    18,472.69/25,491.25 = 10,919.71/x
  3. Step 3: Cross multiply
    18,472.69x = 25,491.25 × 10,919.71
  4. Step 4: Simplify right side
    18,472.69x = 278,357,057.54
  5. Step 5: Solve for x
    x = 278,357,057.54/18,472.69
  6. Step 6: Final answer
    x = 15,068.57

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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.