Home / 31,685.31-43,722.74-18,935.96

Finding the Fourth Proportional to 31,685.31, 43,722.74 and 18,935.96

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Solution

The fourth proportional to 31,685.31, 43,722.74 and 18,935.96 is: 26,129.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,685.31 : 43,722.74 = 18,935.96 : x
  2. Step 2: Convert to fraction form
    31,685.31/43,722.74 = 18,935.96/x
  3. Step 3: Cross multiply
    31,685.31x = 43,722.74 × 18,935.96
  4. Step 4: Simplify right side
    31,685.31x = 827,931,742.44
  5. Step 5: Solve for x
    x = 827,931,742.44/31,685.31
  6. Step 6: Final answer
    x = 26,129.83

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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.