Home / 40,128.90-55,377.21-22,224.66

Finding the Fourth Proportional to 40,128.90, 55,377.21 and 22,224.66

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Solution

The fourth proportional to 40,128.90, 55,377.21 and 22,224.66 is: 30,669.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,128.90 : 55,377.21 = 22,224.66 : x
  2. Step 2: Convert to fraction form
    40,128.90/55,377.21 = 22,224.66/x
  3. Step 3: Cross multiply
    40,128.90x = 55,377.21 × 22,224.66
  4. Step 4: Simplify right side
    40,128.90x = 1,230,739,664.00
  5. Step 5: Solve for x
    x = 1,230,739,664.00/40,128.90
  6. Step 6: Final answer
    x = 30,669.66

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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.