Home / 15,353.88-21,226.41-15,213.75

Finding the Fourth Proportional to 15,353.88, 21,226.41 and 15,213.75

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Solution

The fourth proportional to 15,353.88, 21,226.41 and 15,213.75 is: 21,032.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,353.88 : 21,226.41 = 15,213.75 : x
  2. Step 2: Convert to fraction form
    15,353.88/21,226.41 = 15,213.75/x
  3. Step 3: Cross multiply
    15,353.88x = 21,226.41 × 15,213.75
  4. Step 4: Simplify right side
    15,353.88x = 322,933,295.14
  5. Step 5: Solve for x
    x = 322,933,295.14/15,353.88
  6. Step 6: Final answer
    x = 21,032.68

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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.