Home / 21,292.21-29,170.46-20,494.12

Finding the Fourth Proportional to 21,292.21, 29,170.46 and 20,494.12

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Solution

The fourth proportional to 21,292.21, 29,170.46 and 20,494.12 is: 28,077.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,292.21 : 29,170.46 = 20,494.12 : x
  2. Step 2: Convert to fraction form
    21,292.21/29,170.46 = 20,494.12/x
  3. Step 3: Cross multiply
    21,292.21x = 29,170.46 × 20,494.12
  4. Step 4: Simplify right side
    21,292.21x = 597,822,907.70
  5. Step 5: Solve for x
    x = 597,822,907.70/21,292.21
  6. Step 6: Final answer
    x = 28,077.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.