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Finding the Fourth Proportional to 21,917.93, 32,877.36 and 7,126.83

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Solution

The fourth proportional to 21,917.93, 32,877.36 and 7,126.83 is: 10,690.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,917.93 : 32,877.36 = 7,126.83 : x
  2. Step 2: Convert to fraction form
    21,917.93/32,877.36 = 7,126.83/x
  3. Step 3: Cross multiply
    21,917.93x = 32,877.36 × 7,126.83
  4. Step 4: Simplify right side
    21,917.93x = 234,311,355.57
  5. Step 5: Solve for x
    x = 234,311,355.57/21,917.93
  6. Step 6: Final answer
    x = 10,690.40

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1.5x scale

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.