Home / 20,616.96-28,451.16-11,666.16

Finding the Fourth Proportional to 20,616.96, 28,451.16 and 11,666.16

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Solution

The fourth proportional to 20,616.96, 28,451.16 and 11,666.16 is: 16,099.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,616.96 : 28,451.16 = 11,666.16 : x
  2. Step 2: Convert to fraction form
    20,616.96/28,451.16 = 11,666.16/x
  3. Step 3: Cross multiply
    20,616.96x = 28,451.16 × 11,666.16
  4. Step 4: Simplify right side
    20,616.96x = 331,915,784.75
  5. Step 5: Solve for x
    x = 331,915,784.75/20,616.96
  6. Step 6: Final answer
    x = 16,099.16

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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.