Home / 21,839.76-30,073.68-21,349.44

Finding the Fourth Proportional to 21,839.76, 30,073.68 and 21,349.44

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Solution

The fourth proportional to 21,839.76, 30,073.68 and 21,349.44 is: 29,398.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,839.76 : 30,073.68 = 21,349.44 : x
  2. Step 2: Convert to fraction form
    21,839.76/30,073.68 = 21,349.44/x
  3. Step 3: Cross multiply
    21,839.76x = 30,073.68 × 21,349.44
  4. Step 4: Simplify right side
    21,839.76x = 642,056,226.74
  5. Step 5: Solve for x
    x = 642,056,226.74/21,839.76
  6. Step 6: Final answer
    x = 29,398.50

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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.