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Finding the Fourth Proportional to 15,900.20, 23,829.90 and 8,880.20

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Solution

The fourth proportional to 15,900.20, 23,829.90 and 8,880.20 is: 13,308.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,900.20 : 23,829.90 = 8,880.20 : x
  2. Step 2: Convert to fraction form
    15,900.20/23,829.90 = 8,880.20/x
  3. Step 3: Cross multiply
    15,900.20x = 23,829.90 × 8,880.20
  4. Step 4: Simplify right side
    15,900.20x = 211,614,277.98
  5. Step 5: Solve for x
    x = 211,614,277.98/15,900.20
  6. Step 6: Final answer
    x = 13,308.91

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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.