Home / 20,850.60-28,772.74-11,417.34

Finding the Fourth Proportional to 20,850.60, 28,772.74 and 11,417.34

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Solution

The fourth proportional to 20,850.60, 28,772.74 and 11,417.34 is: 15,755.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,850.60 : 28,772.74 = 11,417.34 : x
  2. Step 2: Convert to fraction form
    20,850.60/28,772.74 = 11,417.34/x
  3. Step 3: Cross multiply
    20,850.60x = 28,772.74 × 11,417.34
  4. Step 4: Simplify right side
    20,850.60x = 328,508,155.31
  5. Step 5: Solve for x
    x = 328,508,155.31/20,850.60
  6. Step 6: Final answer
    x = 15,755.33

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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.