Home / 28,123.20-42,163.74-9,392.36

Finding the Fourth Proportional to 28,123.20, 42,163.74 and 9,392.36

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Solution

The fourth proportional to 28,123.20, 42,163.74 and 9,392.36 is: 14,081.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,123.20 : 42,163.74 = 9,392.36 : x
  2. Step 2: Convert to fraction form
    28,123.20/42,163.74 = 9,392.36/x
  3. Step 3: Cross multiply
    28,123.20x = 42,163.74 × 9,392.36
  4. Step 4: Simplify right side
    28,123.20x = 396,016,814.21
  5. Step 5: Solve for x
    x = 396,016,814.21/28,123.20
  6. Step 6: Final answer
    x = 14,081.50

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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.