Home / 19,172.14-28,800.14-13,660.90

Finding the Fourth Proportional to 19,172.14, 28,800.14 and 13,660.90

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Solution

The fourth proportional to 19,172.14, 28,800.14 and 13,660.90 is: 20,521.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,172.14 : 28,800.14 = 13,660.90 : x
  2. Step 2: Convert to fraction form
    19,172.14/28,800.14 = 13,660.90/x
  3. Step 3: Cross multiply
    19,172.14x = 28,800.14 × 13,660.90
  4. Step 4: Simplify right side
    19,172.14x = 393,435,692.22
  5. Step 5: Solve for x
    x = 393,435,692.22/19,172.14
  6. Step 6: Final answer
    x = 20,521.22

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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.