Home / 20,692.39-28,522.29-13,975.87

Finding the Fourth Proportional to 20,692.39, 28,522.29 and 13,975.87

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Solution

The fourth proportional to 20,692.39, 28,522.29 and 13,975.87 is: 19,264.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,692.39 : 28,522.29 = 13,975.87 : x
  2. Step 2: Convert to fraction form
    20,692.39/28,522.29 = 13,975.87/x
  3. Step 3: Cross multiply
    20,692.39x = 28,522.29 × 13,975.87
  4. Step 4: Simplify right side
    20,692.39x = 398,623,817.14
  5. Step 5: Solve for x
    x = 398,623,817.14/20,692.39
  6. Step 6: Final answer
    x = 19,264.27

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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.