Home / 31,367.91-43,284.84-18,618.92

Finding the Fourth Proportional to 31,367.91, 43,284.84 and 18,618.92

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Solution

The fourth proportional to 31,367.91, 43,284.84 and 18,618.92 is: 25,692.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,367.91 : 43,284.84 = 18,618.92 : x
  2. Step 2: Convert to fraction form
    31,367.91/43,284.84 = 18,618.92/x
  3. Step 3: Cross multiply
    31,367.91x = 43,284.84 × 18,618.92
  4. Step 4: Simplify right side
    31,367.91x = 805,916,919.07
  5. Step 5: Solve for x
    x = 805,916,919.07/31,367.91
  6. Step 6: Final answer
    x = 25,692.40

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Double scale
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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.