Home / 31,859.25-47,794.65-13,128.87

Finding the Fourth Proportional to 31,859.25, 47,794.65 and 13,128.87

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Solution

The fourth proportional to 31,859.25, 47,794.65 and 13,128.87 is: 19,695.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,859.25 : 47,794.65 = 13,128.87 : x
  2. Step 2: Convert to fraction form
    31,859.25/47,794.65 = 13,128.87/x
  3. Step 3: Cross multiply
    31,859.25x = 47,794.65 × 13,128.87
  4. Step 4: Simplify right side
    31,859.25x = 627,489,746.55
  5. Step 5: Solve for x
    x = 627,489,746.55/31,859.25
  6. Step 6: Final answer
    x = 19,695.68

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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.