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Finding the Fourth Proportional to 15,989.60, 23,986.20 and 4,896.20

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Solution

The fourth proportional to 15,989.60, 23,986.20 and 4,896.20 is: 7,344.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,989.60 : 23,986.20 = 4,896.20 : x
  2. Step 2: Convert to fraction form
    15,989.60/23,986.20 = 4,896.20/x
  3. Step 3: Cross multiply
    15,989.60x = 23,986.20 × 4,896.20
  4. Step 4: Simplify right side
    15,989.60x = 117,441,232.44
  5. Step 5: Solve for x
    x = 117,441,232.44/15,989.60
  6. Step 6: Final answer
    x = 7,344.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.