Home / 40,019.56-55,227.17-21,870.65

Finding the Fourth Proportional to 40,019.56, 55,227.17 and 21,870.65

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Solution

The fourth proportional to 40,019.56, 55,227.17 and 21,870.65 is: 30,181.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,019.56 : 55,227.17 = 21,870.65 : x
  2. Step 2: Convert to fraction form
    40,019.56/55,227.17 = 21,870.65/x
  3. Step 3: Cross multiply
    40,019.56x = 55,227.17 × 21,870.65
  4. Step 4: Simplify right side
    40,019.56x = 1,207,854,105.56
  5. Step 5: Solve for x
    x = 1,207,854,105.56/40,019.56
  6. Step 6: Final answer
    x = 30,181.59

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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.