Home / 28,495.06-42,716.55-12,691.78

Finding the Fourth Proportional to 28,495.06, 42,716.55 and 12,691.78

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Solution

The fourth proportional to 28,495.06, 42,716.55 and 12,691.78 is: 19,026.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,495.06 : 42,716.55 = 12,691.78 : x
  2. Step 2: Convert to fraction form
    28,495.06/42,716.55 = 12,691.78/x
  3. Step 3: Cross multiply
    28,495.06x = 42,716.55 × 12,691.78
  4. Step 4: Simplify right side
    28,495.06x = 542,149,054.96
  5. Step 5: Solve for x
    x = 542,149,054.96/28,495.06
  6. Step 6: Final answer
    x = 19,026.07

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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.