Home / 20,730.49-28,608.41-11,778.25

Finding the Fourth Proportional to 20,730.49, 28,608.41 and 11,778.25

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Solution

The fourth proportional to 20,730.49, 28,608.41 and 11,778.25 is: 16,254.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,730.49 : 28,608.41 = 11,778.25 : x
  2. Step 2: Convert to fraction form
    20,730.49/28,608.41 = 11,778.25/x
  3. Step 3: Cross multiply
    20,730.49x = 28,608.41 × 11,778.25
  4. Step 4: Simplify right side
    20,730.49x = 336,957,005.08
  5. Step 5: Solve for x
    x = 336,957,005.08/20,730.49
  6. Step 6: Final answer
    x = 16,254.17

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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.