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Finding the Fourth Proportional to 25,911.90, 38,873.50 and 8,381.46

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Solution

The fourth proportional to 25,911.90, 38,873.50 and 8,381.46 is: 12,574.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,911.90 : 38,873.50 = 8,381.46 : x
  2. Step 2: Convert to fraction form
    25,911.90/38,873.50 = 8,381.46/x
  3. Step 3: Cross multiply
    25,911.90x = 38,873.50 × 8,381.46
  4. Step 4: Simplify right side
    25,911.90x = 325,816,685.31
  5. Step 5: Solve for x
    x = 325,816,685.31/25,911.90
  6. Step 6: Final answer
    x = 12,574.02

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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.