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Finding the Fourth Proportional to 17,115.80, 25,692.90 and 13,237.40

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Solution

The fourth proportional to 17,115.80, 25,692.90 and 13,237.40 is: 19,870.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,115.80 : 25,692.90 = 13,237.40 : x
  2. Step 2: Convert to fraction form
    17,115.80/25,692.90 = 13,237.40/x
  3. Step 3: Cross multiply
    17,115.80x = 25,692.90 × 13,237.40
  4. Step 4: Simplify right side
    17,115.80x = 340,107,194.46
  5. Step 5: Solve for x
    x = 340,107,194.46/17,115.80
  6. Step 6: Final answer
    x = 19,870.95

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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.