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Finding the Fourth Proportional to 33,987.64, 50,981.64 and 10,612.12

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Solution

The fourth proportional to 33,987.64, 50,981.64 and 10,612.12 is: 15,918.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,987.64 : 50,981.64 = 10,612.12 : x
  2. Step 2: Convert to fraction form
    33,987.64/50,981.64 = 10,612.12/x
  3. Step 3: Cross multiply
    33,987.64x = 50,981.64 × 10,612.12
  4. Step 4: Simplify right side
    33,987.64x = 541,023,281.48
  5. Step 5: Solve for x
    x = 541,023,281.48/33,987.64
  6. Step 6: Final answer
    x = 15,918.24

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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.