Home / 15,820.20-21,837.06-11,105.64

Finding the Fourth Proportional to 15,820.20, 21,837.06 and 11,105.64

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Solution

The fourth proportional to 15,820.20, 21,837.06 and 11,105.64 is: 15,329.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,820.20 : 21,837.06 = 11,105.64 : x
  2. Step 2: Convert to fraction form
    15,820.20/21,837.06 = 11,105.64/x
  3. Step 3: Cross multiply
    15,820.20x = 21,837.06 × 11,105.64
  4. Step 4: Simplify right side
    15,820.20x = 242,514,527.02
  5. Step 5: Solve for x
    x = 242,514,527.02/15,820.20
  6. Step 6: Final answer
    x = 15,329.42

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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.