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Finding the Fourth Proportional to 12,487, 18,730.52 and 5,095.48

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Solution

The fourth proportional to 12,487, 18,730.52 and 5,095.48 is: 7,643.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,487 : 18,730.52 = 5,095.48 : x
  2. Step 2: Convert to fraction form
    12,487/18,730.52 = 5,095.48/x
  3. Step 3: Cross multiply
    12,487x = 18,730.52 × 5,095.48
  4. Step 4: Simplify right side
    12,487x = 95,440,990.05
  5. Step 5: Solve for x
    x = 95,440,990.05/12,487
  6. Step 6: Final answer
    x = 7,643.23

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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.