Home / 20,109.54-27,752.50-11,158.03

Finding the Fourth Proportional to 20,109.54, 27,752.50 and 11,158.03

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Solution

The fourth proportional to 20,109.54, 27,752.50 and 11,158.03 is: 15,398.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,109.54 : 27,752.50 = 11,158.03 : x
  2. Step 2: Convert to fraction form
    20,109.54/27,752.50 = 11,158.03/x
  3. Step 3: Cross multiply
    20,109.54x = 27,752.50 × 11,158.03
  4. Step 4: Simplify right side
    20,109.54x = 309,663,227.58
  5. Step 5: Solve for x
    x = 309,663,227.58/20,109.54
  6. Step 6: Final answer
    x = 15,398.82

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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.