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Finding the Fourth Proportional to 27,996.60, 41,987.61 and 9,278.31

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Solution

The fourth proportional to 27,996.60, 41,987.61 and 9,278.31 is: 13,915.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,996.60 : 41,987.61 = 9,278.31 : x
  2. Step 2: Convert to fraction form
    27,996.60/41,987.61 = 9,278.31/x
  3. Step 3: Cross multiply
    27,996.60x = 41,987.61 × 9,278.31
  4. Step 4: Simplify right side
    27,996.60x = 389,574,061.74
  5. Step 5: Solve for x
    x = 389,574,061.74/27,996.60
  6. Step 6: Final answer
    x = 13,915.05

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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.