Home / 22,439.78-30,966.77-12,230.80

Finding the Fourth Proportional to 22,439.78, 30,966.77 and 12,230.80

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Solution

The fourth proportional to 22,439.78, 30,966.77 and 12,230.80 is: 16,878.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,439.78 : 30,966.77 = 12,230.80 : x
  2. Step 2: Convert to fraction form
    22,439.78/30,966.77 = 12,230.80/x
  3. Step 3: Cross multiply
    22,439.78x = 30,966.77 × 12,230.80
  4. Step 4: Simplify right side
    22,439.78x = 378,748,309.36
  5. Step 5: Solve for x
    x = 378,748,309.36/22,439.78
  6. Step 6: Final answer
    x = 16,878.43

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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.