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Finding the Fourth Proportional to 12,505.68, 17,257.50 and 6,916.68

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Solution

The fourth proportional to 12,505.68, 17,257.50 and 6,916.68 is: 9,544.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,505.68 : 17,257.50 = 6,916.68 : x
  2. Step 2: Convert to fraction form
    12,505.68/17,257.50 = 6,916.68/x
  3. Step 3: Cross multiply
    12,505.68x = 17,257.50 × 6,916.68
  4. Step 4: Simplify right side
    12,505.68x = 119,364,605.10
  5. Step 5: Solve for x
    x = 119,364,605.10/12,505.68
  6. Step 6: Final answer
    x = 9,544.83

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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.