Home / 40,018.56-55,225.79-21,869.65

Finding the Fourth Proportional to 40,018.56, 55,225.79 and 21,869.65

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Solution

The fourth proportional to 40,018.56, 55,225.79 and 21,869.65 is: 30,180.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,018.56 : 55,225.79 = 21,869.65 : x
  2. Step 2: Convert to fraction form
    40,018.56/55,225.79 = 21,869.65/x
  3. Step 3: Cross multiply
    40,018.56x = 55,225.79 × 21,869.65
  4. Step 4: Simplify right side
    40,018.56x = 1,207,768,450.86
  5. Step 5: Solve for x
    x = 1,207,768,450.86/40,018.56
  6. Step 6: Final answer
    x = 30,180.21

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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.