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Finding the Fourth Proportional to 14,915.70, 20,587.48 and 8,544.38

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Solution

The fourth proportional to 14,915.70, 20,587.48 and 8,544.38 is: 11,793.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,915.70 : 20,587.48 = 8,544.38 : x
  2. Step 2: Convert to fraction form
    14,915.70/20,587.48 = 8,544.38/x
  3. Step 3: Cross multiply
    14,915.70x = 20,587.48 × 8,544.38
  4. Step 4: Simplify right side
    14,915.70x = 175,907,128.06
  5. Step 5: Solve for x
    x = 175,907,128.06/14,915.70
  6. Step 6: Final answer
    x = 11,793.42

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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.