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Finding the Fourth Proportional to 18,358.40, 27,537.60 and 10,560.80

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Solution

The fourth proportional to 18,358.40, 27,537.60 and 10,560.80 is: 15,841.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,358.40 : 27,537.60 = 10,560.80 : x
  2. Step 2: Convert to fraction form
    18,358.40/27,537.60 = 10,560.80/x
  3. Step 3: Cross multiply
    18,358.40x = 27,537.60 × 10,560.80
  4. Step 4: Simplify right side
    18,358.40x = 290,819,086.08
  5. Step 5: Solve for x
    x = 290,819,086.08/18,358.40
  6. Step 6: Final answer
    x = 15,841.20

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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.