Home / 21,329.92-29,435.21-11,770.40

Finding the Fourth Proportional to 21,329.92, 29,435.21 and 11,770.40

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Solution

The fourth proportional to 21,329.92, 29,435.21 and 11,770.40 is: 16,243.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,329.92 : 29,435.21 = 11,770.40 : x
  2. Step 2: Convert to fraction form
    21,329.92/29,435.21 = 11,770.40/x
  3. Step 3: Cross multiply
    21,329.92x = 29,435.21 × 11,770.40
  4. Step 4: Simplify right side
    21,329.92x = 346,464,195.78
  5. Step 5: Solve for x
    x = 346,464,195.78/21,329.92
  6. Step 6: Final answer
    x = 16,243.11

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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.