Home / 10,081.86-15,123.90-2,686.56

Finding the Fourth Proportional to 10,081.86, 15,123.90 and 2,686.56

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Solution

The fourth proportional to 10,081.86, 15,123.90 and 2,686.56 is: 4,030.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,081.86 : 15,123.90 = 2,686.56 : x
  2. Step 2: Convert to fraction form
    10,081.86/15,123.90 = 2,686.56/x
  3. Step 3: Cross multiply
    10,081.86x = 15,123.90 × 2,686.56
  4. Step 4: Simplify right side
    10,081.86x = 40,631,264.78
  5. Step 5: Solve for x
    x = 40,631,264.78/10,081.86
  6. Step 6: Final answer
    x = 4,030.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.