Home / 22,220.06-30,665.57-12,662.87

Finding the Fourth Proportional to 22,220.06, 30,665.57 and 12,662.87

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Solution

The fourth proportional to 22,220.06, 30,665.57 and 12,662.87 is: 17,475.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,220.06 : 30,665.57 = 12,662.87 : x
  2. Step 2: Convert to fraction form
    22,220.06/30,665.57 = 12,662.87/x
  3. Step 3: Cross multiply
    22,220.06x = 30,665.57 × 12,662.87
  4. Step 4: Simplify right side
    22,220.06x = 388,313,909.74
  5. Step 5: Solve for x
    x = 388,313,909.74/22,220.06
  6. Step 6: Final answer
    x = 17,475.83

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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.