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Finding the Fourth Proportional to 27,279.16, 40,918.42 and 7,556.98

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Solution

The fourth proportional to 27,279.16, 40,918.42 and 7,556.98 is: 11,335.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,279.16 : 40,918.42 = 7,556.98 : x
  2. Step 2: Convert to fraction form
    27,279.16/40,918.42 = 7,556.98/x
  3. Step 3: Cross multiply
    27,279.16x = 40,918.42 × 7,556.98
  4. Step 4: Simplify right side
    27,279.16x = 309,219,681.57
  5. Step 5: Solve for x
    x = 309,219,681.57/27,279.16
  6. Step 6: Final answer
    x = 11,335.38

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1.5x scale

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.