Home / 12,145.26-18,207.90-5,482.20

Finding the Fourth Proportional to 12,145.26, 18,207.90 and 5,482.20

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Solution

The fourth proportional to 12,145.26, 18,207.90 and 5,482.20 is: 8,218.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,145.26 : 18,207.90 = 5,482.20 : x
  2. Step 2: Convert to fraction form
    12,145.26/18,207.90 = 5,482.20/x
  3. Step 3: Cross multiply
    12,145.26x = 18,207.90 × 5,482.20
  4. Step 4: Simplify right side
    12,145.26x = 99,819,349.38
  5. Step 5: Solve for x
    x = 99,819,349.38/12,145.26
  6. Step 6: Final answer
    x = 8,218.79

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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.