Home / 21,839.13-30,144.49-14,182.20

Finding the Fourth Proportional to 21,839.13, 30,144.49 and 14,182.20

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Solution

The fourth proportional to 21,839.13, 30,144.49 and 14,182.20 is: 19,575.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,839.13 : 30,144.49 = 14,182.20 : x
  2. Step 2: Convert to fraction form
    21,839.13/30,144.49 = 14,182.20/x
  3. Step 3: Cross multiply
    21,839.13x = 30,144.49 × 14,182.20
  4. Step 4: Simplify right side
    21,839.13x = 427,515,186.08
  5. Step 5: Solve for x
    x = 427,515,186.08/21,839.13
  6. Step 6: Final answer
    x = 19,575.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.