Home / 15,456.48-21,330.12-8,382.96

Finding the Fourth Proportional to 15,456.48, 21,330.12 and 8,382.96

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Solution

The fourth proportional to 15,456.48, 21,330.12 and 8,382.96 is: 11,568.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,456.48 : 21,330.12 = 8,382.96 : x
  2. Step 2: Convert to fraction form
    15,456.48/21,330.12 = 8,382.96/x
  3. Step 3: Cross multiply
    15,456.48x = 21,330.12 × 8,382.96
  4. Step 4: Simplify right side
    15,456.48x = 178,809,542.76
  5. Step 5: Solve for x
    x = 178,809,542.76/15,456.48
  6. Step 6: Final answer
    x = 11,568.58

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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.