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Finding the Fourth Proportional to 16,751.64, 25,127.70 and 7,987.48

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Solution

The fourth proportional to 16,751.64, 25,127.70 and 7,987.48 is: 11,981.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,751.64 : 25,127.70 = 7,987.48 : x
  2. Step 2: Convert to fraction form
    16,751.64/25,127.70 = 7,987.48/x
  3. Step 3: Cross multiply
    16,751.64x = 25,127.70 × 7,987.48
  4. Step 4: Simplify right side
    16,751.64x = 200,707,001.20
  5. Step 5: Solve for x
    x = 200,707,001.20/16,751.64
  6. Step 6: Final answer
    x = 11,981.33

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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.