Home / 31,393.58-43,334.52-20,786.63

Finding the Fourth Proportional to 31,393.58, 43,334.52 and 20,786.63

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Solution

The fourth proportional to 31,393.58, 43,334.52 and 20,786.63 is: 28,693.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,393.58 : 43,334.52 = 20,786.63 : x
  2. Step 2: Convert to fraction form
    31,393.58/43,334.52 = 20,786.63/x
  3. Step 3: Cross multiply
    31,393.58x = 43,334.52 × 20,786.63
  4. Step 4: Simplify right side
    31,393.58x = 900,778,633.47
  5. Step 5: Solve for x
    x = 900,778,633.47/31,393.58
  6. Step 6: Final answer
    x = 28,693.08

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Double scale
Find fourth proportional to 31,394.58, 43,335.90 and 20,787.63
Similar ratio
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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.