Home / 28,252.71-38,994.12-18,692.79

Finding the Fourth Proportional to 28,252.71, 38,994.12 and 18,692.79

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Solution

The fourth proportional to 28,252.71, 38,994.12 and 18,692.79 is: 25,799.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,252.71 : 38,994.12 = 18,692.79 : x
  2. Step 2: Convert to fraction form
    28,252.71/38,994.12 = 18,692.79/x
  3. Step 3: Cross multiply
    28,252.71x = 38,994.12 × 18,692.79
  4. Step 4: Simplify right side
    28,252.71x = 728,908,896.39
  5. Step 5: Solve for x
    x = 728,908,896.39/28,252.71
  6. Step 6: Final answer
    x = 25,799.61

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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.