Home / 21,472.96-29,634.24-15,186.88

Finding the Fourth Proportional to 21,472.96, 29,634.24 and 15,186.88

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Solution

The fourth proportional to 21,472.96, 29,634.24 and 15,186.88 is: 20,958.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,472.96 : 29,634.24 = 15,186.88 : x
  2. Step 2: Convert to fraction form
    21,472.96/29,634.24 = 15,186.88/x
  3. Step 3: Cross multiply
    21,472.96x = 29,634.24 × 15,186.88
  4. Step 4: Simplify right side
    21,472.96x = 450,051,646.77
  5. Step 5: Solve for x
    x = 450,051,646.77/21,472.96
  6. Step 6: Final answer
    x = 20,958.99

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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.