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Finding the Fourth Proportional to 18,154.40, 27,205.64 and 10,347.12

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Solution

The fourth proportional to 18,154.40, 27,205.64 and 10,347.12 is: 15,505.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,154.40 : 27,205.64 = 10,347.12 : x
  2. Step 2: Convert to fraction form
    18,154.40/27,205.64 = 10,347.12/x
  3. Step 3: Cross multiply
    18,154.40x = 27,205.64 × 10,347.12
  4. Step 4: Simplify right side
    18,154.40x = 281,500,021.76
  5. Step 5: Solve for x
    x = 281,500,021.76/18,154.40
  6. Step 6: Final answer
    x = 15,505.88

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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.