Home / 21,176.78-29,223.90-11,616.71

Finding the Fourth Proportional to 21,176.78, 29,223.90 and 11,616.71

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Solution

The fourth proportional to 21,176.78, 29,223.90 and 11,616.71 is: 16,031.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,176.78 : 29,223.90 = 11,616.71 : x
  2. Step 2: Convert to fraction form
    21,176.78/29,223.90 = 11,616.71/x
  3. Step 3: Cross multiply
    21,176.78x = 29,223.90 × 11,616.71
  4. Step 4: Simplify right side
    21,176.78x = 339,485,571.37
  5. Step 5: Solve for x
    x = 339,485,571.37/21,176.78
  6. Step 6: Final answer
    x = 16,031.03

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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.