Home / 21,273.54-29,356.34-11,711.57

Finding the Fourth Proportional to 21,273.54, 29,356.34 and 11,711.57

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Solution

The fourth proportional to 21,273.54, 29,356.34 and 11,711.57 is: 16,161.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,273.54 : 29,356.34 = 11,711.57 : x
  2. Step 2: Convert to fraction form
    21,273.54/29,356.34 = 11,711.57/x
  3. Step 3: Cross multiply
    21,273.54x = 29,356.34 × 11,711.57
  4. Step 4: Simplify right side
    21,273.54x = 343,808,830.85
  5. Step 5: Solve for x
    x = 343,808,830.85/21,273.54
  6. Step 6: Final answer
    x = 16,161.34

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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.