Home / 12,001.20-18,001.80-6,154.08

Finding the Fourth Proportional to 12,001.20, 18,001.80 and 6,154.08

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Solution

The fourth proportional to 12,001.20, 18,001.80 and 6,154.08 is: 9,231.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,001.20 : 18,001.80 = 6,154.08 : x
  2. Step 2: Convert to fraction form
    12,001.20/18,001.80 = 6,154.08/x
  3. Step 3: Cross multiply
    12,001.20x = 18,001.80 × 6,154.08
  4. Step 4: Simplify right side
    12,001.20x = 110,784,517.34
  5. Step 5: Solve for x
    x = 110,784,517.34/12,001.20
  6. Step 6: Final answer
    x = 9,231.12

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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.