Home / 21,131.28-29,162.16-11,700

Finding the Fourth Proportional to 21,131.28, 29,162.16 and 11,700

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Solution

The fourth proportional to 21,131.28, 29,162.16 and 11,700 is: 16,146.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,131.28 : 29,162.16 = 11,700 : x
  2. Step 2: Convert to fraction form
    21,131.28/29,162.16 = 11,700/x
  3. Step 3: Cross multiply
    21,131.28x = 29,162.16 × 11,700
  4. Step 4: Simplify right side
    21,131.28x = 341,197,272
  5. Step 5: Solve for x
    x = 341,197,272/21,131.28
  6. Step 6: Final answer
    x = 16,146.55

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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.