Home / 28,458.92-42,690.42-10,928.74

Finding the Fourth Proportional to 28,458.92, 42,690.42 and 10,928.74

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Solution

The fourth proportional to 28,458.92, 42,690.42 and 10,928.74 is: 16,393.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,458.92 : 42,690.42 = 10,928.74 : x
  2. Step 2: Convert to fraction form
    28,458.92/42,690.42 = 10,928.74/x
  3. Step 3: Cross multiply
    28,458.92x = 42,690.42 × 10,928.74
  4. Step 4: Simplify right side
    28,458.92x = 466,552,500.67
  5. Step 5: Solve for x
    x = 466,552,500.67/28,458.92
  6. Step 6: Final answer
    x = 16,393.89

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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.