Home / 22,072.80-30,460.20-12,641.28

Finding the Fourth Proportional to 22,072.80, 30,460.20 and 12,641.28

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Solution

The fourth proportional to 22,072.80, 30,460.20 and 12,641.28 is: 17,444.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,072.80 : 30,460.20 = 12,641.28 : x
  2. Step 2: Convert to fraction form
    22,072.80/30,460.20 = 12,641.28/x
  3. Step 3: Cross multiply
    22,072.80x = 30,460.20 × 12,641.28
  4. Step 4: Simplify right side
    22,072.80x = 385,055,917.06
  5. Step 5: Solve for x
    x = 385,055,917.06/22,072.80
  6. Step 6: Final answer
    x = 17,444.82

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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.