Home / 40,382.78-55,728.16-22,479.35

Finding the Fourth Proportional to 40,382.78, 55,728.16 and 22,479.35

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Solution

The fourth proportional to 40,382.78, 55,728.16 and 22,479.35 is: 31,021.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,382.78 : 55,728.16 = 22,479.35 : x
  2. Step 2: Convert to fraction form
    40,382.78/55,728.16 = 22,479.35/x
  3. Step 3: Cross multiply
    40,382.78x = 55,728.16 × 22,479.35
  4. Step 4: Simplify right side
    40,382.78x = 1,252,732,478.66
  5. Step 5: Solve for x
    x = 1,252,732,478.66/40,382.78
  6. Step 6: Final answer
    x = 31,021.46

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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.