Home / 10,863.40-14,991.42-6,147.70

Finding the Fourth Proportional to 10,863.40, 14,991.42 and 6,147.70

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Solution

The fourth proportional to 10,863.40, 14,991.42 and 6,147.70 is: 8,483.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,863.40 : 14,991.42 = 6,147.70 : x
  2. Step 2: Convert to fraction form
    10,863.40/14,991.42 = 6,147.70/x
  3. Step 3: Cross multiply
    10,863.40x = 14,991.42 × 6,147.70
  4. Step 4: Simplify right side
    10,863.40x = 92,162,752.73
  5. Step 5: Solve for x
    x = 92,162,752.73/10,863.40
  6. Step 6: Final answer
    x = 8,483.79

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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.