Home / 22,251.24-30,704.10-12,820.20

Finding the Fourth Proportional to 22,251.24, 30,704.10 and 12,820.20

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Solution

The fourth proportional to 22,251.24, 30,704.10 and 12,820.20 is: 17,690.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,251.24 : 30,704.10 = 12,820.20 : x
  2. Step 2: Convert to fraction form
    22,251.24/30,704.10 = 12,820.20/x
  3. Step 3: Cross multiply
    22,251.24x = 30,704.10 × 12,820.20
  4. Step 4: Simplify right side
    22,251.24x = 393,632,702.82
  5. Step 5: Solve for x
    x = 393,632,702.82/22,251.24
  6. Step 6: Final answer
    x = 17,690.37

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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.