Home / 31,781.91-43,840.80-19,824.48

Finding the Fourth Proportional to 31,781.91, 43,840.80 and 19,824.48

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Solution

The fourth proportional to 31,781.91, 43,840.80 and 19,824.48 is: 27,346.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,781.91 : 43,840.80 = 19,824.48 : x
  2. Step 2: Convert to fraction form
    31,781.91/43,840.80 = 19,824.48/x
  3. Step 3: Cross multiply
    31,781.91x = 43,840.80 × 19,824.48
  4. Step 4: Simplify right side
    31,781.91x = 869,121,002.74
  5. Step 5: Solve for x
    x = 869,121,002.74/31,781.91
  6. Step 6: Final answer
    x = 27,346.41

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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.