Home / 20,443.32-28,212.08-11,947.68

Finding the Fourth Proportional to 20,443.32, 28,212.08 and 11,947.68

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Solution

The fourth proportional to 20,443.32, 28,212.08 and 11,947.68 is: 16,487.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,443.32 : 28,212.08 = 11,947.68 : x
  2. Step 2: Convert to fraction form
    20,443.32/28,212.08 = 11,947.68/x
  3. Step 3: Cross multiply
    20,443.32x = 28,212.08 × 11,947.68
  4. Step 4: Simplify right side
    20,443.32x = 337,068,903.97
  5. Step 5: Solve for x
    x = 337,068,903.97/20,443.32
  6. Step 6: Final answer
    x = 16,487.97

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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.