Home / 31,801.10-43,876.62-19,876.55

Finding the Fourth Proportional to 31,801.10, 43,876.62 and 19,876.55

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Solution

The fourth proportional to 31,801.10, 43,876.62 and 19,876.55 is: 27,424.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,801.10 : 43,876.62 = 19,876.55 : x
  2. Step 2: Convert to fraction form
    31,801.10/43,876.62 = 19,876.55/x
  3. Step 3: Cross multiply
    31,801.10x = 43,876.62 × 19,876.55
  4. Step 4: Simplify right side
    31,801.10x = 872,115,831.26
  5. Step 5: Solve for x
    x = 872,115,831.26/31,801.10
  6. Step 6: Final answer
    x = 27,424.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.