Home / 10,128.11-13,976.40-5,878.96

Finding the Fourth Proportional to 10,128.11, 13,976.40 and 5,878.96

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Solution

The fourth proportional to 10,128.11, 13,976.40 and 5,878.96 is: 8,112.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,128.11 : 13,976.40 = 5,878.96 : x
  2. Step 2: Convert to fraction form
    10,128.11/13,976.40 = 5,878.96/x
  3. Step 3: Cross multiply
    10,128.11x = 13,976.40 × 5,878.96
  4. Step 4: Simplify right side
    10,128.11x = 82,166,696.54
  5. Step 5: Solve for x
    x = 82,166,696.54/10,128.11
  6. Step 6: Final answer
    x = 8,112.74

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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.