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Finding the Fourth Proportional to 12,883.50, 17,776.26 and 7,505.28

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Solution

The fourth proportional to 12,883.50, 17,776.26 and 7,505.28 is: 10,355.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,883.50 : 17,776.26 = 7,505.28 : x
  2. Step 2: Convert to fraction form
    12,883.50/17,776.26 = 7,505.28/x
  3. Step 3: Cross multiply
    12,883.50x = 17,776.26 × 7,505.28
  4. Step 4: Simplify right side
    12,883.50x = 133,415,808.65
  5. Step 5: Solve for x
    x = 133,415,808.65/12,883.50
  6. Step 6: Final answer
    x = 10,355.56

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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.