Home / 20,435.32-28,200.72-11,943.28

Finding the Fourth Proportional to 20,435.32, 28,200.72 and 11,943.28

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Solution

The fourth proportional to 20,435.32, 28,200.72 and 11,943.28 is: 16,481.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,435.32 : 28,200.72 = 11,943.28 : x
  2. Step 2: Convert to fraction form
    20,435.32/28,200.72 = 11,943.28/x
  3. Step 3: Cross multiply
    20,435.32x = 28,200.72 × 11,943.28
  4. Step 4: Simplify right side
    20,435.32x = 336,809,095.16
  5. Step 5: Solve for x
    x = 336,809,095.16/20,435.32
  6. Step 6: Final answer
    x = 16,481.71

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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.