Home / 31,531.32-47,295.61-7,838.36

Finding the Fourth Proportional to 31,531.32, 47,295.61 and 7,838.36

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Solution

The fourth proportional to 31,531.32, 47,295.61 and 7,838.36 is: 11,757.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,531.32 : 47,295.61 = 7,838.36 : x
  2. Step 2: Convert to fraction form
    31,531.32/47,295.61 = 7,838.36/x
  3. Step 3: Cross multiply
    31,531.32x = 47,295.61 × 7,838.36
  4. Step 4: Simplify right side
    31,531.32x = 370,720,017.60
  5. Step 5: Solve for x
    x = 370,720,017.60/31,531.32
  6. Step 6: Final answer
    x = 11,757.20

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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.