Home / 10,101.20-15,135.60-6,634.40

Finding the Fourth Proportional to 10,101.20, 15,135.60 and 6,634.40

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Solution

The fourth proportional to 10,101.20, 15,135.60 and 6,634.40 is: 9,940.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,101.20 : 15,135.60 = 6,634.40 : x
  2. Step 2: Convert to fraction form
    10,101.20/15,135.60 = 6,634.40/x
  3. Step 3: Cross multiply
    10,101.20x = 15,135.60 × 6,634.40
  4. Step 4: Simplify right side
    10,101.20x = 100,415,624.64
  5. Step 5: Solve for x
    x = 100,415,624.64/10,101.20
  6. Step 6: Final answer
    x = 9,940.96

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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.