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Finding the Fourth Proportional to 25,680.58, 38,524.50 and 7,912.68

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Solution

The fourth proportional to 25,680.58, 38,524.50 and 7,912.68 is: 11,870.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,680.58 : 38,524.50 = 7,912.68 : x
  2. Step 2: Convert to fraction form
    25,680.58/38,524.50 = 7,912.68/x
  3. Step 3: Cross multiply
    25,680.58x = 38,524.50 × 7,912.68
  4. Step 4: Simplify right side
    25,680.58x = 304,831,896.19
  5. Step 5: Solve for x
    x = 304,831,896.19/25,680.58
  6. Step 6: Final answer
    x = 11,870.13

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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.