Home / 12,001.82-18,000.65-5,426.48

Finding the Fourth Proportional to 12,001.82, 18,000.65 and 5,426.48

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Solution

The fourth proportional to 12,001.82, 18,000.65 and 5,426.48 is: 8,138.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,001.82 : 18,000.65 = 5,426.48 : x
  2. Step 2: Convert to fraction form
    12,001.82/18,000.65 = 5,426.48/x
  3. Step 3: Cross multiply
    12,001.82x = 18,000.65 × 5,426.48
  4. Step 4: Simplify right side
    12,001.82x = 97,680,050.08
  5. Step 5: Solve for x
    x = 97,680,050.08/12,001.82
  6. Step 6: Final answer
    x = 8,138.77

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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.