Home / 28,270.25-42,406.19-7,493.75

Finding the Fourth Proportional to 28,270.25, 42,406.19 and 7,493.75

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Solution

The fourth proportional to 28,270.25, 42,406.19 and 7,493.75 is: 11,240.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,270.25 : 42,406.19 = 7,493.75 : x
  2. Step 2: Convert to fraction form
    28,270.25/42,406.19 = 7,493.75/x
  3. Step 3: Cross multiply
    28,270.25x = 42,406.19 × 7,493.75
  4. Step 4: Simplify right side
    28,270.25x = 317,781,386.31
  5. Step 5: Solve for x
    x = 317,781,386.31/28,270.25
  6. Step 6: Final answer
    x = 11,240.84

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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.