Home / 29,331.78-40,443.75-21,377.58

Finding the Fourth Proportional to 29,331.78, 40,443.75 and 21,377.58

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Solution

The fourth proportional to 29,331.78, 40,443.75 and 21,377.58 is: 29,476.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,331.78 : 40,443.75 = 21,377.58 : x
  2. Step 2: Convert to fraction form
    29,331.78/40,443.75 = 21,377.58/x
  3. Step 3: Cross multiply
    29,331.78x = 40,443.75 × 21,377.58
  4. Step 4: Simplify right side
    29,331.78x = 864,589,501.13
  5. Step 5: Solve for x
    x = 864,589,501.13/29,331.78
  6. Step 6: Final answer
    x = 29,476.20

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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.