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Finding the Fourth Proportional to 28,778, 39,703.92 and 17,444.48

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Solution

The fourth proportional to 28,778, 39,703.92 and 17,444.48 is: 24,067.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,778 : 39,703.92 = 17,444.48 : x
  2. Step 2: Convert to fraction form
    28,778/39,703.92 = 17,444.48/x
  3. Step 3: Cross multiply
    28,778x = 39,703.92 × 17,444.48
  4. Step 4: Simplify right side
    28,778x = 692,614,238.36
  5. Step 5: Solve for x
    x = 692,614,238.36/28,778
  6. Step 6: Final answer
    x = 24,067.49

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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.