Home / 15,015.23-20,727.88-10,711.61

Finding the Fourth Proportional to 15,015.23, 20,727.88 and 10,711.61

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Solution

The fourth proportional to 15,015.23, 20,727.88 and 10,711.61 is: 14,786.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,015.23 : 20,727.88 = 10,711.61 : x
  2. Step 2: Convert to fraction form
    15,015.23/20,727.88 = 10,711.61/x
  3. Step 3: Cross multiply
    15,015.23x = 20,727.88 × 10,711.61
  4. Step 4: Simplify right side
    15,015.23x = 222,028,836.27
  5. Step 5: Solve for x
    x = 222,028,836.27/15,015.23
  6. Step 6: Final answer
    x = 14,786.91

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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.