Home / 40,147.31-55,401.44-21,997.94

Finding the Fourth Proportional to 40,147.31, 55,401.44 and 21,997.94

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Solution

The fourth proportional to 40,147.31, 55,401.44 and 21,997.94 is: 30,356.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,147.31 : 55,401.44 = 21,997.94 : x
  2. Step 2: Convert to fraction form
    40,147.31/55,401.44 = 21,997.94/x
  3. Step 3: Cross multiply
    40,147.31x = 55,401.44 × 21,997.94
  4. Step 4: Simplify right side
    40,147.31x = 1,218,717,166.04
  5. Step 5: Solve for x
    x = 1,218,717,166.04/40,147.31
  6. Step 6: Final answer
    x = 30,356.13

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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.