Home / 11,968.60-16,513.38-7,122.57

Finding the Fourth Proportional to 11,968.60, 16,513.38 and 7,122.57

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Solution

The fourth proportional to 11,968.60, 16,513.38 and 7,122.57 is: 9,827.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,968.60 : 16,513.38 = 7,122.57 : x
  2. Step 2: Convert to fraction form
    11,968.60/16,513.38 = 7,122.57/x
  3. Step 3: Cross multiply
    11,968.60x = 16,513.38 × 7,122.57
  4. Step 4: Simplify right side
    11,968.60x = 117,617,704.99
  5. Step 5: Solve for x
    x = 117,617,704.99/11,968.60
  6. Step 6: Final answer
    x = 9,827.19

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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.