Home / 15,655.06-21,604.36-8,581.88

Finding the Fourth Proportional to 15,655.06, 21,604.36 and 8,581.88

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Solution

The fourth proportional to 15,655.06, 21,604.36 and 8,581.88 is: 11,843.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,655.06 : 21,604.36 = 8,581.88 : x
  2. Step 2: Convert to fraction form
    15,655.06/21,604.36 = 8,581.88/x
  3. Step 3: Cross multiply
    15,655.06x = 21,604.36 × 8,581.88
  4. Step 4: Simplify right side
    15,655.06x = 185,406,025.00
  5. Step 5: Solve for x
    x = 185,406,025.00/15,655.06
  6. Step 6: Final answer
    x = 11,843.20

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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.