Home / 11,921.16-16,451.08-6,616.02

Finding the Fourth Proportional to 11,921.16, 16,451.08 and 6,616.02

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Solution

The fourth proportional to 11,921.16, 16,451.08 and 6,616.02 is: 9,130.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,921.16 : 16,451.08 = 6,616.02 : x
  2. Step 2: Convert to fraction form
    11,921.16/16,451.08 = 6,616.02/x
  3. Step 3: Cross multiply
    11,921.16x = 16,451.08 × 6,616.02
  4. Step 4: Simplify right side
    11,921.16x = 108,840,674.30
  5. Step 5: Solve for x
    x = 108,840,674.30/11,921.16
  6. Step 6: Final answer
    x = 9,130.04

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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.