Home / 20,841.92-28,761.60-11,410.40

Finding the Fourth Proportional to 20,841.92, 28,761.60 and 11,410.40

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Solution

The fourth proportional to 20,841.92, 28,761.60 and 11,410.40 is: 15,746.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,841.92 : 28,761.60 = 11,410.40 : x
  2. Step 2: Convert to fraction form
    20,841.92/28,761.60 = 11,410.40/x
  3. Step 3: Cross multiply
    20,841.92x = 28,761.60 × 11,410.40
  4. Step 4: Simplify right side
    20,841.92x = 328,181,360.64
  5. Step 5: Solve for x
    x = 328,181,360.64/20,841.92
  6. Step 6: Final answer
    x = 15,746.22

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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.