Home / 21,976.02-30,319.38-12,414.78

Finding the Fourth Proportional to 21,976.02, 30,319.38 and 12,414.78

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Solution

The fourth proportional to 21,976.02, 30,319.38 and 12,414.78 is: 17,128.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,976.02 : 30,319.38 = 12,414.78 : x
  2. Step 2: Convert to fraction form
    21,976.02/30,319.38 = 12,414.78/x
  3. Step 3: Cross multiply
    21,976.02x = 30,319.38 × 12,414.78
  4. Step 4: Simplify right side
    21,976.02x = 376,408,432.44
  5. Step 5: Solve for x
    x = 376,408,432.44/21,976.02
  6. Step 6: Final answer
    x = 17,128.14

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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.