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Finding the Fourth Proportional to 15,996, 24,002.64 and 7,788

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Solution

The fourth proportional to 15,996, 24,002.64 and 7,788 is: 11,686.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,996 : 24,002.64 = 7,788 : x
  2. Step 2: Convert to fraction form
    15,996/24,002.64 = 7,788/x
  3. Step 3: Cross multiply
    15,996x = 24,002.64 × 7,788
  4. Step 4: Simplify right side
    15,996x = 186,932,560.32
  5. Step 5: Solve for x
    x = 186,932,560.32/15,996
  6. Step 6: Final answer
    x = 11,686.21

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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.