Home / 20,705.63-28,571.96-11,753.51

Finding the Fourth Proportional to 20,705.63, 28,571.96 and 11,753.51

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Solution

The fourth proportional to 20,705.63, 28,571.96 and 11,753.51 is: 16,218.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,705.63 : 28,571.96 = 11,753.51 : x
  2. Step 2: Convert to fraction form
    20,705.63/28,571.96 = 11,753.51/x
  3. Step 3: Cross multiply
    20,705.63x = 28,571.96 × 11,753.51
  4. Step 4: Simplify right side
    20,705.63x = 335,820,704.10
  5. Step 5: Solve for x
    x = 335,820,704.10/20,705.63
  6. Step 6: Final answer
    x = 16,218.82

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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.