Home / 15,161.45-20,906.08-10,382.18

Finding the Fourth Proportional to 15,161.45, 20,906.08 and 10,382.18

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Solution

The fourth proportional to 15,161.45, 20,906.08 and 10,382.18 is: 14,315.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,161.45 : 20,906.08 = 10,382.18 : x
  2. Step 2: Convert to fraction form
    15,161.45/20,906.08 = 10,382.18/x
  3. Step 3: Cross multiply
    15,161.45x = 20,906.08 × 10,382.18
  4. Step 4: Simplify right side
    15,161.45x = 217,050,555.17
  5. Step 5: Solve for x
    x = 217,050,555.17/15,161.45
  6. Step 6: Final answer
    x = 14,315.95

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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.