Home / 20,693.28-28,557.36-11,740.44

Finding the Fourth Proportional to 20,693.28, 28,557.36 and 11,740.44

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Solution

The fourth proportional to 20,693.28, 28,557.36 and 11,740.44 is: 16,202.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,693.28 : 28,557.36 = 11,740.44 : x
  2. Step 2: Convert to fraction form
    20,693.28/28,557.36 = 11,740.44/x
  3. Step 3: Cross multiply
    20,693.28x = 28,557.36 × 11,740.44
  4. Step 4: Simplify right side
    20,693.28x = 335,275,971.64
  5. Step 5: Solve for x
    x = 335,275,971.64/20,693.28
  6. Step 6: Final answer
    x = 16,202.17

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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.