Home / 20,832.09-28,727.28-15,740.15

Finding the Fourth Proportional to 20,832.09, 28,727.28 and 15,740.15

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Solution

The fourth proportional to 20,832.09, 28,727.28 and 15,740.15 is: 21,705.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,832.09 : 28,727.28 = 15,740.15 : x
  2. Step 2: Convert to fraction form
    20,832.09/28,727.28 = 15,740.15/x
  3. Step 3: Cross multiply
    20,832.09x = 28,727.28 × 15,740.15
  4. Step 4: Simplify right side
    20,832.09x = 452,171,552.66
  5. Step 5: Solve for x
    x = 452,171,552.66/20,832.09
  6. Step 6: Final answer
    x = 21,705.53

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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.