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Finding the Fourth Proportional to 20,737.01, 28,619.48 and 11,786.11

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Solution

The fourth proportional to 20,737.01, 28,619.48 and 11,786.11 is: 16,266.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,737.01 : 28,619.48 = 11,786.11 : x
  2. Step 2: Convert to fraction form
    20,737.01/28,619.48 = 11,786.11/x
  3. Step 3: Cross multiply
    20,737.01x = 28,619.48 × 11,786.11
  4. Step 4: Simplify right side
    20,737.01x = 337,312,231.04
  5. Step 5: Solve for x
    x = 337,312,231.04/20,737.01
  6. Step 6: Final answer
    x = 16,266.19

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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.