Home / 10,085.88-15,129.92-2,690.56

Finding the Fourth Proportional to 10,085.88, 15,129.92 and 2,690.56

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Solution

The fourth proportional to 10,085.88, 15,129.92 and 2,690.56 is: 4,036.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,085.88 : 15,129.92 = 2,690.56 : x
  2. Step 2: Convert to fraction form
    10,085.88/15,129.92 = 2,690.56/x
  3. Step 3: Cross multiply
    10,085.88x = 15,129.92 × 2,690.56
  4. Step 4: Simplify right side
    10,085.88x = 40,707,957.56
  5. Step 5: Solve for x
    x = 40,707,957.56/10,085.88
  6. Step 6: Final answer
    x = 4,036.13

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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.