Home / 10,655.40-15,985.66-4,081.48

Finding the Fourth Proportional to 10,655.40, 15,985.66 and 4,081.48

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Solution

The fourth proportional to 10,655.40, 15,985.66 and 4,081.48 is: 6,123.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,655.40 : 15,985.66 = 4,081.48 : x
  2. Step 2: Convert to fraction form
    10,655.40/15,985.66 = 4,081.48/x
  3. Step 3: Cross multiply
    10,655.40x = 15,985.66 × 4,081.48
  4. Step 4: Simplify right side
    10,655.40x = 65,245,151.58
  5. Step 5: Solve for x
    x = 65,245,151.58/10,655.40
  6. Step 6: Final answer
    x = 6,123.20

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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.