Home / 20,200.80-27,877.18-11,248.28

Finding the Fourth Proportional to 20,200.80, 27,877.18 and 11,248.28

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Solution

The fourth proportional to 20,200.80, 27,877.18 and 11,248.28 is: 15,522.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,200.80 : 27,877.18 = 11,248.28 : x
  2. Step 2: Convert to fraction form
    20,200.80/27,877.18 = 11,248.28/x
  3. Step 3: Cross multiply
    20,200.80x = 27,877.18 × 11,248.28
  4. Step 4: Simplify right side
    20,200.80x = 313,570,326.25
  5. Step 5: Solve for x
    x = 313,570,326.25/20,200.80
  6. Step 6: Final answer
    x = 15,522.67

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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.