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Finding the Fourth Proportional to 15,193.59, 20,968.21 and 8,480.53

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Solution

The fourth proportional to 15,193.59, 20,968.21 and 8,480.53 is: 11,703.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,193.59 : 20,968.21 = 8,480.53 : x
  2. Step 2: Convert to fraction form
    15,193.59/20,968.21 = 8,480.53/x
  3. Step 3: Cross multiply
    15,193.59x = 20,968.21 × 8,480.53
  4. Step 4: Simplify right side
    15,193.59x = 177,821,533.95
  5. Step 5: Solve for x
    x = 177,821,533.95/15,193.59
  6. Step 6: Final answer
    x = 11,703.72

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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.