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Finding the Fourth Proportional to 18,340.60, 27,502.80 and 7,243.60

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Solution

The fourth proportional to 18,340.60, 27,502.80 and 7,243.60 is: 10,862.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,340.60 : 27,502.80 = 7,243.60 : x
  2. Step 2: Convert to fraction form
    18,340.60/27,502.80 = 7,243.60/x
  3. Step 3: Cross multiply
    18,340.60x = 27,502.80 × 7,243.60
  4. Step 4: Simplify right side
    18,340.60x = 199,219,282.08
  5. Step 5: Solve for x
    x = 199,219,282.08/18,340.60
  6. Step 6: Final answer
    x = 10,862.20

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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.