Home / 13,385.43-18,471.63-8,080.47

Finding the Fourth Proportional to 13,385.43, 18,471.63 and 8,080.47

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Solution

The fourth proportional to 13,385.43, 18,471.63 and 8,080.47 is: 11,150.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,385.43 : 18,471.63 = 8,080.47 : x
  2. Step 2: Convert to fraction form
    13,385.43/18,471.63 = 8,080.47/x
  3. Step 3: Cross multiply
    13,385.43x = 18,471.63 × 8,080.47
  4. Step 4: Simplify right side
    13,385.43x = 149,259,452.07
  5. Step 5: Solve for x
    x = 149,259,452.07/13,385.43
  6. Step 6: Final answer
    x = 11,150.89

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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.