Home / 11,136.08-15,378.12-8,336.72

Finding the Fourth Proportional to 11,136.08, 15,378.12 and 8,336.72

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Solution

The fourth proportional to 11,136.08, 15,378.12 and 8,336.72 is: 11,512.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,136.08 : 15,378.12 = 8,336.72 : x
  2. Step 2: Convert to fraction form
    11,136.08/15,378.12 = 8,336.72/x
  3. Step 3: Cross multiply
    11,136.08x = 15,378.12 × 8,336.72
  4. Step 4: Simplify right side
    11,136.08x = 128,203,080.57
  5. Step 5: Solve for x
    x = 128,203,080.57/11,136.08
  6. Step 6: Final answer
    x = 11,512.41

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Half scale
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Double scale
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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.