Home / 18,511.74-25,545.78-10,555.11

Finding the Fourth Proportional to 18,511.74, 25,545.78 and 10,555.11

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Solution

The fourth proportional to 18,511.74, 25,545.78 and 10,555.11 is: 14,565.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,511.74 : 25,545.78 = 10,555.11 : x
  2. Step 2: Convert to fraction form
    18,511.74/25,545.78 = 10,555.11/x
  3. Step 3: Cross multiply
    18,511.74x = 25,545.78 × 10,555.11
  4. Step 4: Simplify right side
    18,511.74x = 269,638,517.94
  5. Step 5: Solve for x
    x = 269,638,517.94/18,511.74
  6. Step 6: Final answer
    x = 14,565.81

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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.