Home / 20,482.11-28,265.67-12,415.95

Finding the Fourth Proportional to 20,482.11, 28,265.67 and 12,415.95

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Solution

The fourth proportional to 20,482.11, 28,265.67 and 12,415.95 is: 17,134.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,482.11 : 28,265.67 = 12,415.95 : x
  2. Step 2: Convert to fraction form
    20,482.11/28,265.67 = 12,415.95/x
  3. Step 3: Cross multiply
    20,482.11x = 28,265.67 × 12,415.95
  4. Step 4: Simplify right side
    20,482.11x = 350,945,145.44
  5. Step 5: Solve for x
    x = 350,945,145.44/20,482.11
  6. Step 6: Final answer
    x = 17,134.23

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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.