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Finding the Fourth Proportional to 18,063.90, 27,095.85 and 10,287.90

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Solution

The fourth proportional to 18,063.90, 27,095.85 and 10,287.90 is: 15,431.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,063.90 : 27,095.85 = 10,287.90 : x
  2. Step 2: Convert to fraction form
    18,063.90/27,095.85 = 10,287.90/x
  3. Step 3: Cross multiply
    18,063.90x = 27,095.85 × 10,287.90
  4. Step 4: Simplify right side
    18,063.90x = 278,759,395.22
  5. Step 5: Solve for x
    x = 278,759,395.22/18,063.90
  6. Step 6: Final answer
    x = 15,431.85

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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.