Home / 12,663.38-18,995.88-4,872.20

Finding the Fourth Proportional to 12,663.38, 18,995.88 and 4,872.20

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Solution

The fourth proportional to 12,663.38, 18,995.88 and 4,872.20 is: 7,308.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,663.38 : 18,995.88 = 4,872.20 : x
  2. Step 2: Convert to fraction form
    12,663.38/18,995.88 = 4,872.20/x
  3. Step 3: Cross multiply
    12,663.38x = 18,995.88 × 4,872.20
  4. Step 4: Simplify right side
    12,663.38x = 92,551,631.56
  5. Step 5: Solve for x
    x = 92,551,631.56/12,663.38
  6. Step 6: Final answer
    x = 7,308.60

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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.