Home / 28,551.29-42,764.56-11,860.72

Finding the Fourth Proportional to 28,551.29, 42,764.56 and 11,860.72

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Solution

The fourth proportional to 28,551.29, 42,764.56 and 11,860.72 is: 17,765.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,551.29 : 42,764.56 = 11,860.72 : x
  2. Step 2: Convert to fraction form
    28,551.29/42,764.56 = 11,860.72/x
  3. Step 3: Cross multiply
    28,551.29x = 42,764.56 × 11,860.72
  4. Step 4: Simplify right side
    28,551.29x = 507,218,350.44
  5. Step 5: Solve for x
    x = 507,218,350.44/28,551.29
  6. Step 6: Final answer
    x = 17,765.17

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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.