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Finding the Fourth Proportional to 38,997.80, 58,410.30 and 15,612.20

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Solution

The fourth proportional to 38,997.80, 58,410.30 and 15,612.20 is: 23,383.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,997.80 : 58,410.30 = 15,612.20 : x
  2. Step 2: Convert to fraction form
    38,997.80/58,410.30 = 15,612.20/x
  3. Step 3: Cross multiply
    38,997.80x = 58,410.30 × 15,612.20
  4. Step 4: Simplify right side
    38,997.80x = 911,913,285.66
  5. Step 5: Solve for x
    x = 911,913,285.66/38,997.80
  6. Step 6: Final answer
    x = 23,383.71

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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.