Home / 18,171.12-27,199.56-12,515.59

Finding the Fourth Proportional to 18,171.12, 27,199.56 and 12,515.59

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Solution

The fourth proportional to 18,171.12, 27,199.56 and 12,515.59 is: 18,734.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,171.12 : 27,199.56 = 12,515.59 : x
  2. Step 2: Convert to fraction form
    18,171.12/27,199.56 = 12,515.59/x
  3. Step 3: Cross multiply
    18,171.12x = 27,199.56 × 12,515.59
  4. Step 4: Simplify right side
    18,171.12x = 340,418,541.14
  5. Step 5: Solve for x
    x = 340,418,541.14/18,171.12
  6. Step 6: Final answer
    x = 18,734.05

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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.