Home / 12,007.68-18,002.90-5,679.05

Finding the Fourth Proportional to 12,007.68, 18,002.90 and 5,679.05

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Solution

The fourth proportional to 12,007.68, 18,002.90 and 5,679.05 is: 8,514.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,007.68 : 18,002.90 = 5,679.05 : x
  2. Step 2: Convert to fraction form
    12,007.68/18,002.90 = 5,679.05/x
  3. Step 3: Cross multiply
    12,007.68x = 18,002.90 × 5,679.05
  4. Step 4: Simplify right side
    12,007.68x = 102,239,250.84
  5. Step 5: Solve for x
    x = 102,239,250.84/12,007.68
  6. Step 6: Final answer
    x = 8,514.49

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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.