Home / 10,085.41-15,129.08-2,690.31

Finding the Fourth Proportional to 10,085.41, 15,129.08 and 2,690.31

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Solution

The fourth proportional to 10,085.41, 15,129.08 and 2,690.31 is: 4,035.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,085.41 : 15,129.08 = 2,690.31 : x
  2. Step 2: Convert to fraction form
    10,085.41/15,129.08 = 2,690.31/x
  3. Step 3: Cross multiply
    10,085.41x = 15,129.08 × 2,690.31
  4. Step 4: Simplify right side
    10,085.41x = 40,701,968.59
  5. Step 5: Solve for x
    x = 40,701,968.59/10,085.41
  6. Step 6: Final answer
    x = 4,035.73

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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.