Home / 21,131.64-29,161.69-11,700

Finding the Fourth Proportional to 21,131.64, 29,161.69 and 11,700

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Solution

The fourth proportional to 21,131.64, 29,161.69 and 11,700 is: 16,146.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,131.64 : 29,161.69 = 11,700 : x
  2. Step 2: Convert to fraction form
    21,131.64/29,161.69 = 11,700/x
  3. Step 3: Cross multiply
    21,131.64x = 29,161.69 × 11,700
  4. Step 4: Simplify right side
    21,131.64x = 341,191,743.75
  5. Step 5: Solve for x
    x = 341,191,743.75/21,131.64
  6. Step 6: Final answer
    x = 16,146.01

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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.