Home / 20,126.44-27,786.66-15,641.74

Finding the Fourth Proportional to 20,126.44, 27,786.66 and 15,641.74

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Solution

The fourth proportional to 20,126.44, 27,786.66 and 15,641.74 is: 21,595.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,126.44 : 27,786.66 = 15,641.74 : x
  2. Step 2: Convert to fraction form
    20,126.44/27,786.66 = 15,641.74/x
  3. Step 3: Cross multiply
    20,126.44x = 27,786.66 × 15,641.74
  4. Step 4: Simplify right side
    20,126.44x = 434,631,711.19
  5. Step 5: Solve for x
    x = 434,631,711.19/20,126.44
  6. Step 6: Final answer
    x = 21,595.06

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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.