Home / 31,380.56-47,076.58-10,321.78

Finding the Fourth Proportional to 31,380.56, 47,076.58 and 10,321.78

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Solution

The fourth proportional to 31,380.56, 47,076.58 and 10,321.78 is: 15,484.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,380.56 : 47,076.58 = 10,321.78 : x
  2. Step 2: Convert to fraction form
    31,380.56/47,076.58 = 10,321.78/x
  3. Step 3: Cross multiply
    31,380.56x = 47,076.58 × 10,321.78
  4. Step 4: Simplify right side
    31,380.56x = 485,913,866.53
  5. Step 5: Solve for x
    x = 485,913,866.53/31,380.56
  6. Step 6: Final answer
    x = 15,484.55

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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.