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Finding the Fourth Proportional to 25,943.07, 38,920.07 and 8,411.54

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Solution

The fourth proportional to 25,943.07, 38,920.07 and 8,411.54 is: 12,619.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,943.07 : 38,920.07 = 8,411.54 : x
  2. Step 2: Convert to fraction form
    25,943.07/38,920.07 = 8,411.54/x
  3. Step 3: Cross multiply
    25,943.07x = 38,920.07 × 8,411.54
  4. Step 4: Simplify right side
    25,943.07x = 327,377,552.04
  5. Step 5: Solve for x
    x = 327,377,552.04/25,943.07
  6. Step 6: Final answer
    x = 12,619.08

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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.