Home / 22,142.63-30,555.63-12,711.20

Finding the Fourth Proportional to 22,142.63, 30,555.63 and 12,711.20

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Solution

The fourth proportional to 22,142.63, 30,555.63 and 12,711.20 is: 17,540.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,142.63 : 30,555.63 = 12,711.20 : x
  2. Step 2: Convert to fraction form
    22,142.63/30,555.63 = 12,711.20/x
  3. Step 3: Cross multiply
    22,142.63x = 30,555.63 × 12,711.20
  4. Step 4: Simplify right side
    22,142.63x = 388,398,571.28
  5. Step 5: Solve for x
    x = 388,398,571.28/22,142.63
  6. Step 6: Final answer
    x = 17,540.76

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Half scale
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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.