Home / 18,886.44-28,305.37-7,800.91

Finding the Fourth Proportional to 18,886.44, 28,305.37 and 7,800.91

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Solution

The fourth proportional to 18,886.44, 28,305.37 and 7,800.91 is: 11,691.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,886.44 : 28,305.37 = 7,800.91 : x
  2. Step 2: Convert to fraction form
    18,886.44/28,305.37 = 7,800.91/x
  3. Step 3: Cross multiply
    18,886.44x = 28,305.37 × 7,800.91
  4. Step 4: Simplify right side
    18,886.44x = 220,807,643.89
  5. Step 5: Solve for x
    x = 220,807,643.89/18,886.44
  6. Step 6: Final answer
    x = 11,691.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.