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Finding the Fourth Proportional to 15,456.64, 23,184 and 4,512.64

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Solution

The fourth proportional to 15,456.64, 23,184 and 4,512.64 is: 6,768.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,456.64 : 23,184 = 4,512.64 : x
  2. Step 2: Convert to fraction form
    15,456.64/23,184 = 4,512.64/x
  3. Step 3: Cross multiply
    15,456.64x = 23,184 × 4,512.64
  4. Step 4: Simplify right side
    15,456.64x = 104,621,045.76
  5. Step 5: Solve for x
    x = 104,621,045.76/15,456.64
  6. Step 6: Final answer
    x = 6,768.68

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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.