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Finding the Fourth Proportional to 18,326.80, 27,457.80 and 15,540.40

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Solution

The fourth proportional to 18,326.80, 27,457.80 and 15,540.40 is: 23,283.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,326.80 : 27,457.80 = 15,540.40 : x
  2. Step 2: Convert to fraction form
    18,326.80/27,457.80 = 15,540.40/x
  3. Step 3: Cross multiply
    18,326.80x = 27,457.80 × 15,540.40
  4. Step 4: Simplify right side
    18,326.80x = 426,705,195.12
  5. Step 5: Solve for x
    x = 426,705,195.12/18,326.80
  6. Step 6: Final answer
    x = 23,283.13

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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.