Home / 12,219.05-18,287.04-7,542.02

Finding the Fourth Proportional to 12,219.05, 18,287.04 and 7,542.02

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Solution

The fourth proportional to 12,219.05, 18,287.04 and 7,542.02 is: 11,287.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,219.05 : 18,287.04 = 7,542.02 : x
  2. Step 2: Convert to fraction form
    12,219.05/18,287.04 = 7,542.02/x
  3. Step 3: Cross multiply
    12,219.05x = 18,287.04 × 7,542.02
  4. Step 4: Simplify right side
    12,219.05x = 137,921,221.42
  5. Step 5: Solve for x
    x = 137,921,221.42/12,219.05
  6. Step 6: Final answer
    x = 11,287.39

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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.