Home / 21,275.35-31,912.56-5,692.97

Finding the Fourth Proportional to 21,275.35, 31,912.56 and 5,692.97

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Solution

The fourth proportional to 21,275.35, 31,912.56 and 5,692.97 is: 8,539.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,275.35 : 31,912.56 = 5,692.97 : x
  2. Step 2: Convert to fraction form
    21,275.35/31,912.56 = 5,692.97/x
  3. Step 3: Cross multiply
    21,275.35x = 31,912.56 × 5,692.97
  4. Step 4: Simplify right side
    21,275.35x = 181,677,246.70
  5. Step 5: Solve for x
    x = 181,677,246.70/21,275.35
  6. Step 6: Final answer
    x = 8,539.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.