Home / 40,057.23-55,279.14-21,908.31

Finding the Fourth Proportional to 40,057.23, 55,279.14 and 21,908.31

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Solution

The fourth proportional to 40,057.23, 55,279.14 and 21,908.31 is: 30,233.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,057.23 : 55,279.14 = 21,908.31 : x
  2. Step 2: Convert to fraction form
    40,057.23/55,279.14 = 21,908.31/x
  3. Step 3: Cross multiply
    40,057.23x = 55,279.14 × 21,908.31
  4. Step 4: Simplify right side
    40,057.23x = 1,211,072,535.65
  5. Step 5: Solve for x
    x = 1,211,072,535.65/40,057.23
  6. Step 6: Final answer
    x = 30,233.56

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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.