Home / 20,700.32-28,566.54-11,268.96

Finding the Fourth Proportional to 20,700.32, 28,566.54 and 11,268.96

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Solution

The fourth proportional to 20,700.32, 28,566.54 and 11,268.96 is: 15,551.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,700.32 : 28,566.54 = 11,268.96 : x
  2. Step 2: Convert to fraction form
    20,700.32/28,566.54 = 11,268.96/x
  3. Step 3: Cross multiply
    20,700.32x = 28,566.54 × 11,268.96
  4. Step 4: Simplify right side
    20,700.32x = 321,915,196.60
  5. Step 5: Solve for x
    x = 321,915,196.60/20,700.32
  6. Step 6: Final answer
    x = 15,551.22

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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.