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Finding the Fourth Proportional to 18,153.80, 27,230.70 and 15,966.80

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Solution

The fourth proportional to 18,153.80, 27,230.70 and 15,966.80 is: 23,950.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,153.80 : 27,230.70 = 15,966.80 : x
  2. Step 2: Convert to fraction form
    18,153.80/27,230.70 = 15,966.80/x
  3. Step 3: Cross multiply
    18,153.80x = 27,230.70 × 15,966.80
  4. Step 4: Simplify right side
    18,153.80x = 434,787,140.76
  5. Step 5: Solve for x
    x = 434,787,140.76/18,153.80
  6. Step 6: Final answer
    x = 23,950.20

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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.