Home / 10,198.40-15,278.10-6,895.28

Finding the Fourth Proportional to 10,198.40, 15,278.10 and 6,895.28

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Solution

The fourth proportional to 10,198.40, 15,278.10 and 6,895.28 is: 10,329.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,198.40 : 15,278.10 = 6,895.28 : x
  2. Step 2: Convert to fraction form
    10,198.40/15,278.10 = 6,895.28/x
  3. Step 3: Cross multiply
    10,198.40x = 15,278.10 × 6,895.28
  4. Step 4: Simplify right side
    10,198.40x = 105,346,777.37
  5. Step 5: Solve for x
    x = 105,346,777.37/10,198.40
  6. Step 6: Final answer
    x = 10,329.74

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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.