Home / 20,110.50-27,752.49-11,159.34

Finding the Fourth Proportional to 20,110.50, 27,752.49 and 11,159.34

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Solution

The fourth proportional to 20,110.50, 27,752.49 and 11,159.34 is: 15,399.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,110.50 : 27,752.49 = 11,159.34 : x
  2. Step 2: Convert to fraction form
    20,110.50/27,752.49 = 11,159.34/x
  3. Step 3: Cross multiply
    20,110.50x = 27,752.49 × 11,159.34
  4. Step 4: Simplify right side
    20,110.50x = 309,699,471.76
  5. Step 5: Solve for x
    x = 309,699,471.76/20,110.50
  6. Step 6: Final answer
    x = 15,399.89

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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.