Home / 31,611.06-43,630.65-20,277.54

Finding the Fourth Proportional to 31,611.06, 43,630.65 and 20,277.54

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Solution

The fourth proportional to 31,611.06, 43,630.65 and 20,277.54 is: 27,987.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,611.06 : 43,630.65 = 20,277.54 : x
  2. Step 2: Convert to fraction form
    31,611.06/43,630.65 = 20,277.54/x
  3. Step 3: Cross multiply
    31,611.06x = 43,630.65 × 20,277.54
  4. Step 4: Simplify right side
    31,611.06x = 884,722,250.60
  5. Step 5: Solve for x
    x = 884,722,250.60/31,611.06
  6. Step 6: Final answer
    x = 27,987.74

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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.