Home / 11,616.48-16,037.92-7,988.72

Finding the Fourth Proportional to 11,616.48, 16,037.92 and 7,988.72

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Solution

The fourth proportional to 11,616.48, 16,037.92 and 7,988.72 is: 11,029.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,616.48 : 16,037.92 = 7,988.72 : x
  2. Step 2: Convert to fraction form
    11,616.48/16,037.92 = 7,988.72/x
  3. Step 3: Cross multiply
    11,616.48x = 16,037.92 × 7,988.72
  4. Step 4: Simplify right side
    11,616.48x = 128,122,452.26
  5. Step 5: Solve for x
    x = 128,122,452.26/11,616.48
  6. Step 6: Final answer
    x = 11,029.37

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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.