Home / 21,899.20-30,220.93-12,467.75

Finding the Fourth Proportional to 21,899.20, 30,220.93 and 12,467.75

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Solution

The fourth proportional to 21,899.20, 30,220.93 and 12,467.75 is: 17,205.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,899.20 : 30,220.93 = 12,467.75 : x
  2. Step 2: Convert to fraction form
    21,899.20/30,220.93 = 12,467.75/x
  3. Step 3: Cross multiply
    21,899.20x = 30,220.93 × 12,467.75
  4. Step 4: Simplify right side
    21,899.20x = 376,787,000.01
  5. Step 5: Solve for x
    x = 376,787,000.01/21,899.20
  6. Step 6: Final answer
    x = 17,205.51

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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.