Home / 20,218.14-30,308.45-10,335.60

Finding the Fourth Proportional to 20,218.14, 30,308.45 and 10,335.60

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Solution

The fourth proportional to 20,218.14, 30,308.45 and 10,335.60 is: 15,493.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,218.14 : 30,308.45 = 10,335.60 : x
  2. Step 2: Convert to fraction form
    20,218.14/30,308.45 = 10,335.60/x
  3. Step 3: Cross multiply
    20,218.14x = 30,308.45 × 10,335.60
  4. Step 4: Simplify right side
    20,218.14x = 313,255,964.14
  5. Step 5: Solve for x
    x = 313,255,964.14/20,218.14
  6. Step 6: Final answer
    x = 15,493.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.