Home / 11,639.20-16,060.56-6,921.76

Finding the Fourth Proportional to 11,639.20, 16,060.56 and 6,921.76

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Solution

The fourth proportional to 11,639.20, 16,060.56 and 6,921.76 is: 9,551.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,639.20 : 16,060.56 = 6,921.76 : x
  2. Step 2: Convert to fraction form
    11,639.20/16,060.56 = 6,921.76/x
  3. Step 3: Cross multiply
    11,639.20x = 16,060.56 × 6,921.76
  4. Step 4: Simplify right side
    11,639.20x = 111,167,341.79
  5. Step 5: Solve for x
    x = 111,167,341.79/11,639.20
  6. Step 6: Final answer
    x = 9,551.12

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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.