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Finding the Fourth Proportional to 12,505.52, 17,257.64 and 6,916.52

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Solution

The fourth proportional to 12,505.52, 17,257.64 and 6,916.52 is: 9,544.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,505.52 : 17,257.64 = 6,916.52 : x
  2. Step 2: Convert to fraction form
    12,505.52/17,257.64 = 6,916.52/x
  3. Step 3: Cross multiply
    12,505.52x = 17,257.64 × 6,916.52
  4. Step 4: Simplify right side
    12,505.52x = 119,362,812.21
  5. Step 5: Solve for x
    x = 119,362,812.21/12,505.52
  6. Step 6: Final answer
    x = 9,544.81

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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.