Home / 13,080.24-18,057.12-8,910.36

Finding the Fourth Proportional to 13,080.24, 18,057.12 and 8,910.36

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Solution

The fourth proportional to 13,080.24, 18,057.12 and 8,910.36 is: 12,300.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,080.24 : 18,057.12 = 8,910.36 : x
  2. Step 2: Convert to fraction form
    13,080.24/18,057.12 = 8,910.36/x
  3. Step 3: Cross multiply
    13,080.24x = 18,057.12 × 8,910.36
  4. Step 4: Simplify right side
    13,080.24x = 160,895,439.76
  5. Step 5: Solve for x
    x = 160,895,439.76/13,080.24
  6. Step 6: Final answer
    x = 12,300.65

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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.