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Finding the Fourth Proportional to 18,783.50, 25,915.37 and 10,824.65

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Solution

The fourth proportional to 18,783.50, 25,915.37 and 10,824.65 is: 14,934.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,783.50 : 25,915.37 = 10,824.65 : x
  2. Step 2: Convert to fraction form
    18,783.50/25,915.37 = 10,824.65/x
  3. Step 3: Cross multiply
    18,783.50x = 25,915.37 × 10,824.65
  4. Step 4: Simplify right side
    18,783.50x = 280,524,626.17
  5. Step 5: Solve for x
    x = 280,524,626.17/18,783.50
  6. Step 6: Final answer
    x = 14,934.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.