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Finding the Fourth Proportional to 19,959.94, 29,946.78 and 8,874.38

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Solution

The fourth proportional to 19,959.94, 29,946.78 and 8,874.38 is: 13,314.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,959.94 : 29,946.78 = 8,874.38 : x
  2. Step 2: Convert to fraction form
    19,959.94/29,946.78 = 8,874.38/x
  3. Step 3: Cross multiply
    19,959.94x = 29,946.78 × 8,874.38
  4. Step 4: Simplify right side
    19,959.94x = 265,759,105.50
  5. Step 5: Solve for x
    x = 265,759,105.50/19,959.94
  6. Step 6: Final answer
    x = 13,314.62

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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.