Home / 28,820.29-43,245.13-19,440.65

Finding the Fourth Proportional to 28,820.29, 43,245.13 and 19,440.65

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Solution

The fourth proportional to 28,820.29, 43,245.13 and 19,440.65 is: 29,170.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,820.29 : 43,245.13 = 19,440.65 : x
  2. Step 2: Convert to fraction form
    28,820.29/43,245.13 = 19,440.65/x
  3. Step 3: Cross multiply
    28,820.29x = 43,245.13 × 19,440.65
  4. Step 4: Simplify right side
    28,820.29x = 840,713,529.36
  5. Step 5: Solve for x
    x = 840,713,529.36/28,820.29
  6. Step 6: Final answer
    x = 29,170.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.