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Finding the Fourth Proportional to 15,615.56, 23,429.82 and 5,228.12

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Solution

The fourth proportional to 15,615.56, 23,429.82 and 5,228.12 is: 7,844.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,615.56 : 23,429.82 = 5,228.12 : x
  2. Step 2: Convert to fraction form
    15,615.56/23,429.82 = 5,228.12/x
  3. Step 3: Cross multiply
    15,615.56x = 23,429.82 × 5,228.12
  4. Step 4: Simplify right side
    15,615.56x = 122,493,910.54
  5. Step 5: Solve for x
    x = 122,493,910.54/15,615.56
  6. Step 6: Final answer
    x = 7,844.35

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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.