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Finding the Fourth Proportional to 12,754.92, 19,134.30 and 4,545

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Solution

The fourth proportional to 12,754.92, 19,134.30 and 4,545 is: 6,818.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,754.92 : 19,134.30 = 4,545 : x
  2. Step 2: Convert to fraction form
    12,754.92/19,134.30 = 4,545/x
  3. Step 3: Cross multiply
    12,754.92x = 19,134.30 × 4,545
  4. Step 4: Simplify right side
    12,754.92x = 86,965,393.50
  5. Step 5: Solve for x
    x = 86,965,393.50/12,754.92
  6. Step 6: Final answer
    x = 6,818.18

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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.