Home / 20,106.56-27,742.94-11,152.15

Finding the Fourth Proportional to 20,106.56, 27,742.94 and 11,152.15

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Solution

The fourth proportional to 20,106.56, 27,742.94 and 11,152.15 is: 15,387.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,106.56 : 27,742.94 = 11,152.15 : x
  2. Step 2: Convert to fraction form
    20,106.56/27,742.94 = 11,152.15/x
  3. Step 3: Cross multiply
    20,106.56x = 27,742.94 × 11,152.15
  4. Step 4: Simplify right side
    20,106.56x = 309,393,345.02
  5. Step 5: Solve for x
    x = 309,393,345.02/20,106.56
  6. Step 6: Final answer
    x = 15,387.68

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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.