Home / 15,084.86-20,818.25-8,371.76

Finding the Fourth Proportional to 15,084.86, 20,818.25 and 8,371.76

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Solution

The fourth proportional to 15,084.86, 20,818.25 and 8,371.76 is: 11,553.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,084.86 : 20,818.25 = 8,371.76 : x
  2. Step 2: Convert to fraction form
    15,084.86/20,818.25 = 8,371.76/x
  3. Step 3: Cross multiply
    15,084.86x = 20,818.25 × 8,371.76
  4. Step 4: Simplify right side
    15,084.86x = 174,285,246.67
  5. Step 5: Solve for x
    x = 174,285,246.67/15,084.86
  6. Step 6: Final answer
    x = 11,553.65

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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.