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Finding the Fourth Proportional to 16,521.64, 24,791.28 and 7,756.64

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Solution

The fourth proportional to 16,521.64, 24,791.28 and 7,756.64 is: 11,639.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,521.64 : 24,791.28 = 7,756.64 : x
  2. Step 2: Convert to fraction form
    16,521.64/24,791.28 = 7,756.64/x
  3. Step 3: Cross multiply
    16,521.64x = 24,791.28 × 7,756.64
  4. Step 4: Simplify right side
    16,521.64x = 192,297,034.10
  5. Step 5: Solve for x
    x = 192,297,034.10/16,521.64
  6. Step 6: Final answer
    x = 11,639.10

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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.