Home / 20,109.32-27,754.19-11,159.71

Finding the Fourth Proportional to 20,109.32, 27,754.19 and 11,159.71

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Solution

The fourth proportional to 20,109.32, 27,754.19 and 11,159.71 is: 15,402.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,109.32 : 27,754.19 = 11,159.71 : x
  2. Step 2: Convert to fraction form
    20,109.32/27,754.19 = 11,159.71/x
  3. Step 3: Cross multiply
    20,109.32x = 27,754.19 × 11,159.71
  4. Step 4: Simplify right side
    20,109.32x = 309,728,586.50
  5. Step 5: Solve for x
    x = 309,728,586.50/20,109.32
  6. Step 6: Final answer
    x = 15,402.24

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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.