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Finding the Fourth Proportional to 11,336.48, 15,645.48 and 6,621.20

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Solution

The fourth proportional to 11,336.48, 15,645.48 and 6,621.20 is: 9,137.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,336.48 : 15,645.48 = 6,621.20 : x
  2. Step 2: Convert to fraction form
    11,336.48/15,645.48 = 6,621.20/x
  3. Step 3: Cross multiply
    11,336.48x = 15,645.48 × 6,621.20
  4. Step 4: Simplify right side
    11,336.48x = 103,591,852.18
  5. Step 5: Solve for x
    x = 103,591,852.18/11,336.48
  6. Step 6: Final answer
    x = 9,137.92

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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.