Home / 20,659.92-28,508.37-11,705.51

Finding the Fourth Proportional to 20,659.92, 28,508.37 and 11,705.51

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Solution

The fourth proportional to 20,659.92, 28,508.37 and 11,705.51 is: 16,152.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,659.92 : 28,508.37 = 11,705.51 : x
  2. Step 2: Convert to fraction form
    20,659.92/28,508.37 = 11,705.51/x
  3. Step 3: Cross multiply
    20,659.92x = 28,508.37 × 11,705.51
  4. Step 4: Simplify right side
    20,659.92x = 333,705,010.12
  5. Step 5: Solve for x
    x = 333,705,010.12/20,659.92
  6. Step 6: Final answer
    x = 16,152.29

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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.