Home / 20,807.06-28,713.87-11,375.66

Finding the Fourth Proportional to 20,807.06, 28,713.87 and 11,375.66

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Solution

The fourth proportional to 20,807.06, 28,713.87 and 11,375.66 is: 15,698.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,807.06 : 28,713.87 = 11,375.66 : x
  2. Step 2: Convert to fraction form
    20,807.06/28,713.87 = 11,375.66/x
  3. Step 3: Cross multiply
    20,807.06x = 28,713.87 × 11,375.66
  4. Step 4: Simplify right side
    20,807.06x = 326,639,222.40
  5. Step 5: Solve for x
    x = 326,639,222.40/20,807.06
  6. Step 6: Final answer
    x = 15,698.48

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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.