Home / 12,151.62-18,220.14-4,754.70

Finding the Fourth Proportional to 12,151.62, 18,220.14 and 4,754.70

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Solution

The fourth proportional to 12,151.62, 18,220.14 and 4,754.70 is: 7,129.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,151.62 : 18,220.14 = 4,754.70 : x
  2. Step 2: Convert to fraction form
    12,151.62/18,220.14 = 4,754.70/x
  3. Step 3: Cross multiply
    12,151.62x = 18,220.14 × 4,754.70
  4. Step 4: Simplify right side
    12,151.62x = 86,631,299.66
  5. Step 5: Solve for x
    x = 86,631,299.66/12,151.62
  6. Step 6: Final answer
    x = 7,129.20

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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.