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Finding the Fourth Proportional to 25,411.71, 38,115.73 and 7,881.08

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Solution

The fourth proportional to 25,411.71, 38,115.73 and 7,881.08 is: 11,821.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,411.71 : 38,115.73 = 7,881.08 : x
  2. Step 2: Convert to fraction form
    25,411.71/38,115.73 = 7,881.08/x
  3. Step 3: Cross multiply
    25,411.71x = 38,115.73 × 7,881.08
  4. Step 4: Simplify right side
    25,411.71x = 300,393,151.06
  5. Step 5: Solve for x
    x = 300,393,151.06/25,411.71
  6. Step 6: Final answer
    x = 11,821.05

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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.