Home / 21,329.78-29,434.89-11,769.75

Finding the Fourth Proportional to 21,329.78, 29,434.89 and 11,769.75

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Solution

The fourth proportional to 21,329.78, 29,434.89 and 11,769.75 is: 16,242.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,329.78 : 29,434.89 = 11,769.75 : x
  2. Step 2: Convert to fraction form
    21,329.78/29,434.89 = 11,769.75/x
  3. Step 3: Cross multiply
    21,329.78x = 29,434.89 × 11,769.75
  4. Step 4: Simplify right side
    21,329.78x = 346,441,296.58
  5. Step 5: Solve for x
    x = 346,441,296.58/21,329.78
  6. Step 6: Final answer
    x = 16,242.14

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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.