Home / 31,671.36-47,489.50-12,964.54

Finding the Fourth Proportional to 31,671.36, 47,489.50 and 12,964.54

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Solution

The fourth proportional to 31,671.36, 47,489.50 and 12,964.54 is: 19,439.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,671.36 : 47,489.50 = 12,964.54 : x
  2. Step 2: Convert to fraction form
    31,671.36/47,489.50 = 12,964.54/x
  3. Step 3: Cross multiply
    31,671.36x = 47,489.50 × 12,964.54
  4. Step 4: Simplify right side
    31,671.36x = 615,679,522.33
  5. Step 5: Solve for x
    x = 615,679,522.33/31,671.36
  6. Step 6: Final answer
    x = 19,439.63

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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.