Home / 12,000.91-18,001.63-3,680.74

Finding the Fourth Proportional to 12,000.91, 18,001.63 and 3,680.74

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Solution

The fourth proportional to 12,000.91, 18,001.63 and 3,680.74 is: 5,521.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,000.91 : 18,001.63 = 3,680.74 : x
  2. Step 2: Convert to fraction form
    12,000.91/18,001.63 = 3,680.74/x
  3. Step 3: Cross multiply
    12,000.91x = 18,001.63 × 3,680.74
  4. Step 4: Simplify right side
    12,000.91x = 66,259,319.61
  5. Step 5: Solve for x
    x = 66,259,319.61/12,000.91
  6. Step 6: Final answer
    x = 5,521.19

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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.