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Finding the Fourth Proportional to 18,744.40, 28,127.40 and 7,058.80

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Solution

The fourth proportional to 18,744.40, 28,127.40 and 7,058.80 is: 10,592.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,744.40 : 28,127.40 = 7,058.80 : x
  2. Step 2: Convert to fraction form
    18,744.40/28,127.40 = 7,058.80/x
  3. Step 3: Cross multiply
    18,744.40x = 28,127.40 × 7,058.80
  4. Step 4: Simplify right side
    18,744.40x = 198,545,691.12
  5. Step 5: Solve for x
    x = 198,545,691.12/18,744.40
  6. Step 6: Final answer
    x = 10,592.27

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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.