Home / 18,291.40-27,418.20-9,953.80

Finding the Fourth Proportional to 18,291.40, 27,418.20 and 9,953.80

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Solution

The fourth proportional to 18,291.40, 27,418.20 and 9,953.80 is: 14,920.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,291.40 : 27,418.20 = 9,953.80 : x
  2. Step 2: Convert to fraction form
    18,291.40/27,418.20 = 9,953.80/x
  3. Step 3: Cross multiply
    18,291.40x = 27,418.20 × 9,953.80
  4. Step 4: Simplify right side
    18,291.40x = 272,915,279.16
  5. Step 5: Solve for x
    x = 272,915,279.16/18,291.40
  6. Step 6: Final answer
    x = 14,920.42

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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.