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Finding the Fourth Proportional to 18,915.65, 26,103.69 and 10,849.62

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Solution

The fourth proportional to 18,915.65, 26,103.69 and 10,849.62 is: 14,972.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,915.65 : 26,103.69 = 10,849.62 : x
  2. Step 2: Convert to fraction form
    18,915.65/26,103.69 = 10,849.62/x
  3. Step 3: Cross multiply
    18,915.65x = 26,103.69 × 10,849.62
  4. Step 4: Simplify right side
    18,915.65x = 283,215,117.10
  5. Step 5: Solve for x
    x = 283,215,117.10/18,915.65
  6. Step 6: Final answer
    x = 14,972.53

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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.