Home / 20,452.74-28,238.77-15,664.23

Finding the Fourth Proportional to 20,452.74, 28,238.77 and 15,664.23

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Solution

The fourth proportional to 20,452.74, 28,238.77 and 15,664.23 is: 21,627.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,452.74 : 28,238.77 = 15,664.23 : x
  2. Step 2: Convert to fraction form
    20,452.74/28,238.77 = 15,664.23/x
  3. Step 3: Cross multiply
    20,452.74x = 28,238.77 × 15,664.23
  4. Step 4: Simplify right side
    20,452.74x = 442,338,443.14
  5. Step 5: Solve for x
    x = 442,338,443.14/20,452.74
  6. Step 6: Final answer
    x = 21,627.34

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Half scale
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Double scale
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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.