Home / 11,949.76-17,910-9,018.88

Finding the Fourth Proportional to 11,949.76, 17,910 and 9,018.88

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Solution

The fourth proportional to 11,949.76, 17,910 and 9,018.88 is: 13,517.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,949.76 : 17,910 = 9,018.88 : x
  2. Step 2: Convert to fraction form
    11,949.76/17,910 = 9,018.88/x
  3. Step 3: Cross multiply
    11,949.76x = 17,910 × 9,018.88
  4. Step 4: Simplify right side
    11,949.76x = 161,528,140.80
  5. Step 5: Solve for x
    x = 161,528,140.80/11,949.76
  6. Step 6: Final answer
    x = 13,517.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.