Home / 9,881.76-13,635.90-6,688.56

Finding the Fourth Proportional to 9,881.76, 13,635.90 and 6,688.56

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Solution

The fourth proportional to 9,881.76, 13,635.90 and 6,688.56 is: 9,229.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,881.76 : 13,635.90 = 6,688.56 : x
  2. Step 2: Convert to fraction form
    9,881.76/13,635.90 = 6,688.56/x
  3. Step 3: Cross multiply
    9,881.76x = 13,635.90 × 6,688.56
  4. Step 4: Simplify right side
    9,881.76x = 91,204,535.30
  5. Step 5: Solve for x
    x = 91,204,535.30/9,881.76
  6. Step 6: Final answer
    x = 9,229.58

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1.5x scale

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.