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Finding the Fourth Proportional to 17,776.60, 26,652.10 and 9,987.80

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Solution

The fourth proportional to 17,776.60, 26,652.10 and 9,987.80 is: 14,974.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,776.60 : 26,652.10 = 9,987.80 : x
  2. Step 2: Convert to fraction form
    17,776.60/26,652.10 = 9,987.80/x
  3. Step 3: Cross multiply
    17,776.60x = 26,652.10 × 9,987.80
  4. Step 4: Simplify right side
    17,776.60x = 266,195,844.38
  5. Step 5: Solve for x
    x = 266,195,844.38/17,776.60
  6. Step 6: Final answer
    x = 14,974.51

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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.