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Finding the Fourth Proportional to 12,356, 17,051.28 and 6,767.12

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Solution

The fourth proportional to 12,356, 17,051.28 and 6,767.12 is: 9,338.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,356 : 17,051.28 = 6,767.12 : x
  2. Step 2: Convert to fraction form
    12,356/17,051.28 = 6,767.12/x
  3. Step 3: Cross multiply
    12,356x = 17,051.28 × 6,767.12
  4. Step 4: Simplify right side
    12,356x = 115,388,057.91
  5. Step 5: Solve for x
    x = 115,388,057.91/12,356
  6. Step 6: Final answer
    x = 9,338.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.