Home / 28,428.67-42,655.25-11,792.43

Finding the Fourth Proportional to 28,428.67, 42,655.25 and 11,792.43

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Solution

The fourth proportional to 28,428.67, 42,655.25 and 11,792.43 is: 17,693.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,428.67 : 42,655.25 = 11,792.43 : x
  2. Step 2: Convert to fraction form
    28,428.67/42,655.25 = 11,792.43/x
  3. Step 3: Cross multiply
    28,428.67x = 42,655.25 × 11,792.43
  4. Step 4: Simplify right side
    28,428.67x = 503,009,049.76
  5. Step 5: Solve for x
    x = 503,009,049.76/28,428.67
  6. Step 6: Final answer
    x = 17,693.73

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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.