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Finding the Fourth Proportional to 19,550.72, 26,978.40 and 11,053.58

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Solution

The fourth proportional to 19,550.72, 26,978.40 and 11,053.58 is: 15,253.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,550.72 : 26,978.40 = 11,053.58 : x
  2. Step 2: Convert to fraction form
    19,550.72/26,978.40 = 11,053.58/x
  3. Step 3: Cross multiply
    19,550.72x = 26,978.40 × 11,053.58
  4. Step 4: Simplify right side
    19,550.72x = 298,207,902.67
  5. Step 5: Solve for x
    x = 298,207,902.67/19,550.72
  6. Step 6: Final answer
    x = 15,253.04

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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.