Home / 21,619.12-29,832.20-15,956.96

Finding the Fourth Proportional to 21,619.12, 29,832.20 and 15,956.96

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Solution

The fourth proportional to 21,619.12, 29,832.20 and 15,956.96 is: 22,018.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,619.12 : 29,832.20 = 15,956.96 : x
  2. Step 2: Convert to fraction form
    21,619.12/29,832.20 = 15,956.96/x
  3. Step 3: Cross multiply
    21,619.12x = 29,832.20 × 15,956.96
  4. Step 4: Simplify right side
    21,619.12x = 476,031,222.11
  5. Step 5: Solve for x
    x = 476,031,222.11/21,619.12
  6. Step 6: Final answer
    x = 22,018.99

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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.