Home / 20,188.98-27,860.58-11,114.05

Finding the Fourth Proportional to 20,188.98, 27,860.58 and 11,114.05

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Solution

The fourth proportional to 20,188.98, 27,860.58 and 11,114.05 is: 15,337.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,188.98 : 27,860.58 = 11,114.05 : x
  2. Step 2: Convert to fraction form
    20,188.98/27,860.58 = 11,114.05/x
  3. Step 3: Cross multiply
    20,188.98x = 27,860.58 × 11,114.05
  4. Step 4: Simplify right side
    20,188.98x = 309,643,879.15
  5. Step 5: Solve for x
    x = 309,643,879.15/20,188.98
  6. Step 6: Final answer
    x = 15,337.28

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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.