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Finding the Fourth Proportional to 26,641.71, 39,948.66 and 7,919.17

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Solution

The fourth proportional to 26,641.71, 39,948.66 and 7,919.17 is: 11,874.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,641.71 : 39,948.66 = 7,919.17 : x
  2. Step 2: Convert to fraction form
    26,641.71/39,948.66 = 7,919.17/x
  3. Step 3: Cross multiply
    26,641.71x = 39,948.66 × 7,919.17
  4. Step 4: Simplify right side
    26,641.71x = 316,360,129.94
  5. Step 5: Solve for x
    x = 316,360,129.94/26,641.71
  6. Step 6: Final answer
    x = 11,874.62

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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.