Home / 20,705.57-28,574.80-11,754.26

Finding the Fourth Proportional to 20,705.57, 28,574.80 and 11,754.26

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Solution

The fourth proportional to 20,705.57, 28,574.80 and 11,754.26 is: 16,221.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,705.57 : 28,574.80 = 11,754.26 : x
  2. Step 2: Convert to fraction form
    20,705.57/28,574.80 = 11,754.26/x
  3. Step 3: Cross multiply
    20,705.57x = 28,574.80 × 11,754.26
  4. Step 4: Simplify right side
    20,705.57x = 335,875,456.39
  5. Step 5: Solve for x
    x = 335,875,456.39/20,705.57
  6. Step 6: Final answer
    x = 16,221.51

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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.