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Finding the Fourth Proportional to 15,055.78, 20,776.96 and 8,341.83

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Solution

The fourth proportional to 15,055.78, 20,776.96 and 8,341.83 is: 11,511.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,055.78 : 20,776.96 = 8,341.83 : x
  2. Step 2: Convert to fraction form
    15,055.78/20,776.96 = 8,341.83/x
  3. Step 3: Cross multiply
    15,055.78x = 20,776.96 × 8,341.83
  4. Step 4: Simplify right side
    15,055.78x = 173,317,868.24
  5. Step 5: Solve for x
    x = 173,317,868.24/15,055.78
  6. Step 6: Final answer
    x = 11,511.72

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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.