Home / 22,247.78-30,705.38-12,687.68

Finding the Fourth Proportional to 22,247.78, 30,705.38 and 12,687.68

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Solution

The fourth proportional to 22,247.78, 30,705.38 and 12,687.68 is: 17,510.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,247.78 : 30,705.38 = 12,687.68 : x
  2. Step 2: Convert to fraction form
    22,247.78/30,705.38 = 12,687.68/x
  3. Step 3: Cross multiply
    22,247.78x = 30,705.38 × 12,687.68
  4. Step 4: Simplify right side
    22,247.78x = 389,579,972.28
  5. Step 5: Solve for x
    x = 389,579,972.28/22,247.78
  6. Step 6: Final answer
    x = 17,510.96

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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.