Home / 20,848.14-28,770.48-11,288.13

Finding the Fourth Proportional to 20,848.14, 28,770.48 and 11,288.13

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Solution

The fourth proportional to 20,848.14, 28,770.48 and 11,288.13 is: 15,577.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,848.14 : 28,770.48 = 11,288.13 : x
  2. Step 2: Convert to fraction form
    20,848.14/28,770.48 = 11,288.13/x
  3. Step 3: Cross multiply
    20,848.14x = 28,770.48 × 11,288.13
  4. Step 4: Simplify right side
    20,848.14x = 324,764,918.40
  5. Step 5: Solve for x
    x = 324,764,918.40/20,848.14
  6. Step 6: Final answer
    x = 15,577.64

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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.