Home / 21,153.92-29,191.44-11,722.40

Finding the Fourth Proportional to 21,153.92, 29,191.44 and 11,722.40

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Solution

The fourth proportional to 21,153.92, 29,191.44 and 11,722.40 is: 16,176.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,153.92 : 29,191.44 = 11,722.40 : x
  2. Step 2: Convert to fraction form
    21,153.92/29,191.44 = 11,722.40/x
  3. Step 3: Cross multiply
    21,153.92x = 29,191.44 × 11,722.40
  4. Step 4: Simplify right side
    21,153.92x = 342,193,736.26
  5. Step 5: Solve for x
    x = 342,193,736.26/21,153.92
  6. Step 6: Final answer
    x = 16,176.37

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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.