Home / 13,089.24-18,057.20-7,781.04

Finding the Fourth Proportional to 13,089.24, 18,057.20 and 7,781.04

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Solution

The fourth proportional to 13,089.24, 18,057.20 and 7,781.04 is: 10,734.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,089.24 : 18,057.20 = 7,781.04 : x
  2. Step 2: Convert to fraction form
    13,089.24/18,057.20 = 7,781.04/x
  3. Step 3: Cross multiply
    13,089.24x = 18,057.20 × 7,781.04
  4. Step 4: Simplify right side
    13,089.24x = 140,503,756.58
  5. Step 5: Solve for x
    x = 140,503,756.58/13,089.24
  6. Step 6: Final answer
    x = 10,734.29

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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.