Home / 28,787-43,162.06-19,877.38

Finding the Fourth Proportional to 28,787, 43,162.06 and 19,877.38

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Solution

The fourth proportional to 28,787, 43,162.06 and 19,877.38 is: 29,803.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,787 : 43,162.06 = 19,877.38 : x
  2. Step 2: Convert to fraction form
    28,787/43,162.06 = 19,877.38/x
  3. Step 3: Cross multiply
    28,787x = 43,162.06 × 19,877.38
  4. Step 4: Simplify right side
    28,787x = 857,948,668.20
  5. Step 5: Solve for x
    x = 857,948,668.20/28,787
  6. Step 6: Final answer
    x = 29,803.34

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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.