Home / 11,508.28-15,880.32-6,729.34

Finding the Fourth Proportional to 11,508.28, 15,880.32 and 6,729.34

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Solution

The fourth proportional to 11,508.28, 15,880.32 and 6,729.34 is: 9,285.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,508.28 : 15,880.32 = 6,729.34 : x
  2. Step 2: Convert to fraction form
    11,508.28/15,880.32 = 6,729.34/x
  3. Step 3: Cross multiply
    11,508.28x = 15,880.32 × 6,729.34
  4. Step 4: Simplify right side
    11,508.28x = 106,864,072.59
  5. Step 5: Solve for x
    x = 106,864,072.59/11,508.28
  6. Step 6: Final answer
    x = 9,285.84

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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.