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Finding the Fourth Proportional to 18,310.40, 27,465.60 and 18,195.20

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Solution

The fourth proportional to 18,310.40, 27,465.60 and 18,195.20 is: 27,292.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,310.40 : 27,465.60 = 18,195.20 : x
  2. Step 2: Convert to fraction form
    18,310.40/27,465.60 = 18,195.20/x
  3. Step 3: Cross multiply
    18,310.40x = 27,465.60 × 18,195.20
  4. Step 4: Simplify right side
    18,310.40x = 499,742,085.12
  5. Step 5: Solve for x
    x = 499,742,085.12/18,310.40
  6. Step 6: Final answer
    x = 27,292.80

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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.