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Finding the Fourth Proportional to 19,377.96, 26,740.96 and 10,879.84

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Solution

The fourth proportional to 19,377.96, 26,740.96 and 10,879.84 is: 15,013.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,377.96 : 26,740.96 = 10,879.84 : x
  2. Step 2: Convert to fraction form
    19,377.96/26,740.96 = 10,879.84/x
  3. Step 3: Cross multiply
    19,377.96x = 26,740.96 × 10,879.84
  4. Step 4: Simplify right side
    19,377.96x = 290,937,366.25
  5. Step 5: Solve for x
    x = 290,937,366.25/19,377.96
  6. Step 6: Final answer
    x = 15,013.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.