Home / 20,844.51-28,765.17-11,412.87

Finding the Fourth Proportional to 20,844.51, 28,765.17 and 11,412.87

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Solution

The fourth proportional to 20,844.51, 28,765.17 and 11,412.87 is: 15,749.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,844.51 : 28,765.17 = 11,412.87 : x
  2. Step 2: Convert to fraction form
    20,844.51/28,765.17 = 11,412.87/x
  3. Step 3: Cross multiply
    20,844.51x = 28,765.17 × 11,412.87
  4. Step 4: Simplify right side
    20,844.51x = 328,293,145.74
  5. Step 5: Solve for x
    x = 328,293,145.74/20,844.51
  6. Step 6: Final answer
    x = 15,749.62

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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.