Home / 12,147.67-18,207.48-5,482.79

Finding the Fourth Proportional to 12,147.67, 18,207.48 and 5,482.79

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Solution

The fourth proportional to 12,147.67, 18,207.48 and 5,482.79 is: 8,217.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,147.67 : 18,207.48 = 5,482.79 : x
  2. Step 2: Convert to fraction form
    12,147.67/18,207.48 = 5,482.79/x
  3. Step 3: Cross multiply
    12,147.67x = 18,207.48 × 5,482.79
  4. Step 4: Simplify right side
    12,147.67x = 99,827,787.07
  5. Step 5: Solve for x
    x = 99,827,787.07/12,147.67
  6. Step 6: Final answer
    x = 8,217.85

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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.