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Finding the Fourth Proportional to 15,119, 20,865.52 and 8,496.28

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Solution

The fourth proportional to 15,119, 20,865.52 and 8,496.28 is: 11,725.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,119 : 20,865.52 = 8,496.28 : x
  2. Step 2: Convert to fraction form
    15,119/20,865.52 = 8,496.28/x
  3. Step 3: Cross multiply
    15,119x = 20,865.52 × 8,496.28
  4. Step 4: Simplify right side
    15,119x = 177,279,300.27
  5. Step 5: Solve for x
    x = 177,279,300.27/15,119
  6. Step 6: Final answer
    x = 11,725.60

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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.