Home / 9,515.45-13,129.79-5,976.15

Finding the Fourth Proportional to 9,515.45, 13,129.79 and 5,976.15

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Solution

The fourth proportional to 9,515.45, 13,129.79 and 5,976.15 is: 8,246.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,515.45 : 13,129.79 = 5,976.15 : x
  2. Step 2: Convert to fraction form
    9,515.45/13,129.79 = 5,976.15/x
  3. Step 3: Cross multiply
    9,515.45x = 13,129.79 × 5,976.15
  4. Step 4: Simplify right side
    9,515.45x = 78,465,564.63
  5. Step 5: Solve for x
    x = 78,465,564.63/9,515.45
  6. Step 6: Final answer
    x = 8,246.13

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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.