Home / 10,900.14-15,043.41-6,120.87

Finding the Fourth Proportional to 10,900.14, 15,043.41 and 6,120.87

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Solution

The fourth proportional to 10,900.14, 15,043.41 and 6,120.87 is: 8,447.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,900.14 : 15,043.41 = 6,120.87 : x
  2. Step 2: Convert to fraction form
    10,900.14/15,043.41 = 6,120.87/x
  3. Step 3: Cross multiply
    10,900.14x = 15,043.41 × 6,120.87
  4. Step 4: Simplify right side
    10,900.14x = 92,078,756.97
  5. Step 5: Solve for x
    x = 92,078,756.97/10,900.14
  6. Step 6: Final answer
    x = 8,447.48

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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.