Home / 12,878.29-19,279.76-9,770.55

Finding the Fourth Proportional to 12,878.29, 19,279.76 and 9,770.55

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Solution

The fourth proportional to 12,878.29, 19,279.76 and 9,770.55 is: 14,627.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,878.29 : 19,279.76 = 9,770.55 : x
  2. Step 2: Convert to fraction form
    12,878.29/19,279.76 = 9,770.55/x
  3. Step 3: Cross multiply
    12,878.29x = 19,279.76 × 9,770.55
  4. Step 4: Simplify right side
    12,878.29x = 188,373,859.07
  5. Step 5: Solve for x
    x = 188,373,859.07/12,878.29
  6. Step 6: Final answer
    x = 14,627.25

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.