Home / 31,406.94-47,112.48-13,876.92

Finding the Fourth Proportional to 31,406.94, 47,112.48 and 13,876.92

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Solution

The fourth proportional to 31,406.94, 47,112.48 and 13,876.92 is: 20,816.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,406.94 : 47,112.48 = 13,876.92 : x
  2. Step 2: Convert to fraction form
    31,406.94/47,112.48 = 13,876.92/x
  3. Step 3: Cross multiply
    31,406.94x = 47,112.48 × 13,876.92
  4. Step 4: Simplify right side
    31,406.94x = 653,776,115.96
  5. Step 5: Solve for x
    x = 653,776,115.96/31,406.94
  6. Step 6: Final answer
    x = 20,816.29

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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.