Home / 20,202.32-27,878.93-11,127.50

Finding the Fourth Proportional to 20,202.32, 27,878.93 and 11,127.50

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Solution

The fourth proportional to 20,202.32, 27,878.93 and 11,127.50 is: 15,355.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,202.32 : 27,878.93 = 11,127.50 : x
  2. Step 2: Convert to fraction form
    20,202.32/27,878.93 = 11,127.50/x
  3. Step 3: Cross multiply
    20,202.32x = 27,878.93 × 11,127.50
  4. Step 4: Simplify right side
    20,202.32x = 310,222,793.58
  5. Step 5: Solve for x
    x = 310,222,793.58/20,202.32
  6. Step 6: Final answer
    x = 15,355.80

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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.