Home / 21,353.08-29,467.26-11,921.68

Finding the Fourth Proportional to 21,353.08, 29,467.26 and 11,921.68

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Solution

The fourth proportional to 21,353.08, 29,467.26 and 11,921.68 is: 16,451.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,353.08 : 29,467.26 = 11,921.68 : x
  2. Step 2: Convert to fraction form
    21,353.08/29,467.26 = 11,921.68/x
  3. Step 3: Cross multiply
    21,353.08x = 29,467.26 × 11,921.68
  4. Step 4: Simplify right side
    21,353.08x = 351,299,244.20
  5. Step 5: Solve for x
    x = 351,299,244.20/21,353.08
  6. Step 6: Final answer
    x = 16,451.92

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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.