Home / 13,154.43-18,141.80-11,720.73

Finding the Fourth Proportional to 13,154.43, 18,141.80 and 11,720.73

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Solution

The fourth proportional to 13,154.43, 18,141.80 and 11,720.73 is: 16,164.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,154.43 : 18,141.80 = 11,720.73 : x
  2. Step 2: Convert to fraction form
    13,154.43/18,141.80 = 11,720.73/x
  3. Step 3: Cross multiply
    13,154.43x = 18,141.80 × 11,720.73
  4. Step 4: Simplify right side
    13,154.43x = 212,635,080.91
  5. Step 5: Solve for x
    x = 212,635,080.91/13,154.43
  6. Step 6: Final answer
    x = 16,164.52

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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.