Home / 20,656.11-28,505.35-11,705.33

Finding the Fourth Proportional to 20,656.11, 28,505.35 and 11,705.33

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Solution

The fourth proportional to 20,656.11, 28,505.35 and 11,705.33 is: 16,153.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,656.11 : 28,505.35 = 11,705.33 : x
  2. Step 2: Convert to fraction form
    20,656.11/28,505.35 = 11,705.33/x
  3. Step 3: Cross multiply
    20,656.11x = 28,505.35 × 11,705.33
  4. Step 4: Simplify right side
    20,656.11x = 333,664,454.07
  5. Step 5: Solve for x
    x = 333,664,454.07/20,656.11
  6. Step 6: Final answer
    x = 16,153.30

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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.