Home / 20,376.26-28,119.96-11,883.81

Finding the Fourth Proportional to 20,376.26, 28,119.96 and 11,883.81

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Solution

The fourth proportional to 20,376.26, 28,119.96 and 11,883.81 is: 16,400.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,376.26 : 28,119.96 = 11,883.81 : x
  2. Step 2: Convert to fraction form
    20,376.26/28,119.96 = 11,883.81/x
  3. Step 3: Cross multiply
    20,376.26x = 28,119.96 × 11,883.81
  4. Step 4: Simplify right side
    20,376.26x = 334,172,367.30
  5. Step 5: Solve for x
    x = 334,172,367.30/20,376.26
  6. Step 6: Final answer
    x = 16,400.08

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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.