Home / 10,659.72-15,986.44-4,085.40

Finding the Fourth Proportional to 10,659.72, 15,986.44 and 4,085.40

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Solution

The fourth proportional to 10,659.72, 15,986.44 and 4,085.40 is: 6,126.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,659.72 : 15,986.44 = 4,085.40 : x
  2. Step 2: Convert to fraction form
    10,659.72/15,986.44 = 4,085.40/x
  3. Step 3: Cross multiply
    10,659.72x = 15,986.44 × 4,085.40
  4. Step 4: Simplify right side
    10,659.72x = 65,311,001.98
  5. Step 5: Solve for x
    x = 65,311,001.98/10,659.72
  6. Step 6: Final answer
    x = 6,126.90

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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.