Home / 9,921.76-13,693.12-6,340

Finding the Fourth Proportional to 9,921.76, 13,693.12 and 6,340

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Solution

The fourth proportional to 9,921.76, 13,693.12 and 6,340 is: 8,749.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,921.76 : 13,693.12 = 6,340 : x
  2. Step 2: Convert to fraction form
    9,921.76/13,693.12 = 6,340/x
  3. Step 3: Cross multiply
    9,921.76x = 13,693.12 × 6,340
  4. Step 4: Simplify right side
    9,921.76x = 86,814,380.80
  5. Step 5: Solve for x
    x = 86,814,380.80/9,921.76
  6. Step 6: Final answer
    x = 8,749.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.