Home / 21,874.02-30,179.16-12,440.76

Finding the Fourth Proportional to 21,874.02, 30,179.16 and 12,440.76

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Solution

The fourth proportional to 21,874.02, 30,179.16 and 12,440.76 is: 17,164.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,874.02 : 30,179.16 = 12,440.76 : x
  2. Step 2: Convert to fraction form
    21,874.02/30,179.16 = 12,440.76/x
  3. Step 3: Cross multiply
    21,874.02x = 30,179.16 × 12,440.76
  4. Step 4: Simplify right side
    21,874.02x = 375,451,686.56
  5. Step 5: Solve for x
    x = 375,451,686.56/21,874.02
  6. Step 6: Final answer
    x = 17,164.27

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Double scale
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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.