Home / 18,781.07-28,131.10-17,676.98

Finding the Fourth Proportional to 18,781.07, 28,131.10 and 17,676.98

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Solution

The fourth proportional to 18,781.07, 28,131.10 and 17,676.98 is: 26,477.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,781.07 : 28,131.10 = 17,676.98 : x
  2. Step 2: Convert to fraction form
    18,781.07/28,131.10 = 17,676.98/x
  3. Step 3: Cross multiply
    18,781.07x = 28,131.10 × 17,676.98
  4. Step 4: Simplify right side
    18,781.07x = 497,272,812.72
  5. Step 5: Solve for x
    x = 497,272,812.72/18,781.07
  6. Step 6: Final answer
    x = 26,477.35

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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.