Home / 15,204.04-20,979.48-8,488.88

Finding the Fourth Proportional to 15,204.04, 20,979.48 and 8,488.88

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Solution

The fourth proportional to 15,204.04, 20,979.48 and 8,488.88 is: 11,713.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,204.04 : 20,979.48 = 8,488.88 : x
  2. Step 2: Convert to fraction form
    15,204.04/20,979.48 = 8,488.88/x
  3. Step 3: Cross multiply
    15,204.04x = 20,979.48 × 8,488.88
  4. Step 4: Simplify right side
    15,204.04x = 178,092,288.18
  5. Step 5: Solve for x
    x = 178,092,288.18/15,204.04
  6. Step 6: Final answer
    x = 11,713.48

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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.