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Finding the Fourth Proportional to 21,959.93, 32,936.15 and 7,917.17

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Solution

The fourth proportional to 21,959.93, 32,936.15 and 7,917.17 is: 11,874.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,959.93 : 32,936.15 = 7,917.17 : x
  2. Step 2: Convert to fraction form
    21,959.93/32,936.15 = 7,917.17/x
  3. Step 3: Cross multiply
    21,959.93x = 32,936.15 × 7,917.17
  4. Step 4: Simplify right side
    21,959.93x = 260,760,894.43
  5. Step 5: Solve for x
    x = 260,760,894.43/21,959.93
  6. Step 6: Final answer
    x = 11,874.40

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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.