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Finding the Fourth Proportional to 18,341.40, 27,425.70 and 13,675.80

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Solution

The fourth proportional to 18,341.40, 27,425.70 and 13,675.80 is: 20,449.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,341.40 : 27,425.70 = 13,675.80 : x
  2. Step 2: Convert to fraction form
    18,341.40/27,425.70 = 13,675.80/x
  3. Step 3: Cross multiply
    18,341.40x = 27,425.70 × 13,675.80
  4. Step 4: Simplify right side
    18,341.40x = 375,068,388.06
  5. Step 5: Solve for x
    x = 375,068,388.06/18,341.40
  6. Step 6: Final answer
    x = 20,449.28

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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.