Home / 20,689.39-31,028.60-5,692.95

Finding the Fourth Proportional to 20,689.39, 31,028.60 and 5,692.95

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Solution

The fourth proportional to 20,689.39, 31,028.60 and 5,692.95 is: 8,537.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,689.39 : 31,028.60 = 5,692.95 : x
  2. Step 2: Convert to fraction form
    20,689.39/31,028.60 = 5,692.95/x
  3. Step 3: Cross multiply
    20,689.39x = 31,028.60 × 5,692.95
  4. Step 4: Simplify right side
    20,689.39x = 176,644,282.60
  5. Step 5: Solve for x
    x = 176,644,282.60/20,689.39
  6. Step 6: Final answer
    x = 8,537.92

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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.