Home / 20,065.34-27,690.14-11,112.84

Finding the Fourth Proportional to 20,065.34, 27,690.14 and 11,112.84

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Solution

The fourth proportional to 20,065.34, 27,690.14 and 11,112.84 is: 15,335.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,065.34 : 27,690.14 = 11,112.84 : x
  2. Step 2: Convert to fraction form
    20,065.34/27,690.14 = 11,112.84/x
  3. Step 3: Cross multiply
    20,065.34x = 27,690.14 × 11,112.84
  4. Step 4: Simplify right side
    20,065.34x = 307,715,982.79
  5. Step 5: Solve for x
    x = 307,715,982.79/20,065.34
  6. Step 6: Final answer
    x = 15,335.70

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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.