Home / 28,356.67-42,531.76-7,581.79

Finding the Fourth Proportional to 28,356.67, 42,531.76 and 7,581.79

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Solution

The fourth proportional to 28,356.67, 42,531.76 and 7,581.79 is: 11,371.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,356.67 : 42,531.76 = 7,581.79 : x
  2. Step 2: Convert to fraction form
    28,356.67/42,531.76 = 7,581.79/x
  3. Step 3: Cross multiply
    28,356.67x = 42,531.76 × 7,581.79
  4. Step 4: Simplify right side
    28,356.67x = 322,466,766.32
  5. Step 5: Solve for x
    x = 322,466,766.32/28,356.67
  6. Step 6: Final answer
    x = 11,371.81

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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.