Home / 20,758.43-28,646.75-11,327.20

Finding the Fourth Proportional to 20,758.43, 28,646.75 and 11,327.20

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Solution

The fourth proportional to 20,758.43, 28,646.75 and 11,327.20 is: 15,631.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,758.43 : 28,646.75 = 11,327.20 : x
  2. Step 2: Convert to fraction form
    20,758.43/28,646.75 = 11,327.20/x
  3. Step 3: Cross multiply
    20,758.43x = 28,646.75 × 11,327.20
  4. Step 4: Simplify right side
    20,758.43x = 324,487,466.60
  5. Step 5: Solve for x
    x = 324,487,466.60/20,758.43
  6. Step 6: Final answer
    x = 15,631.60

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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.