Home / 20,553.78-28,364.13-11,601.26

Finding the Fourth Proportional to 20,553.78, 28,364.13 and 11,601.26

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Solution

The fourth proportional to 20,553.78, 28,364.13 and 11,601.26 is: 16,009.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,553.78 : 28,364.13 = 11,601.26 : x
  2. Step 2: Convert to fraction form
    20,553.78/28,364.13 = 11,601.26/x
  3. Step 3: Cross multiply
    20,553.78x = 28,364.13 × 11,601.26
  4. Step 4: Simplify right side
    20,553.78x = 329,059,646.80
  5. Step 5: Solve for x
    x = 329,059,646.80/20,553.78
  6. Step 6: Final answer
    x = 16,009.69

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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.