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Finding the Fourth Proportional to 37,956.90, 52,380.95 and 20,961.12

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Solution

The fourth proportional to 37,956.90, 52,380.95 and 20,961.12 is: 28,926.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,956.90 : 52,380.95 = 20,961.12 : x
  2. Step 2: Convert to fraction form
    37,956.90/52,380.95 = 20,961.12/x
  3. Step 3: Cross multiply
    37,956.90x = 52,380.95 × 20,961.12
  4. Step 4: Simplify right side
    37,956.90x = 1,097,963,378.66
  5. Step 5: Solve for x
    x = 1,097,963,378.66/37,956.90
  6. Step 6: Final answer
    x = 28,926.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.