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Finding the Fourth Proportional to 14,815.53, 20,445.84 and 8,101.53

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Solution

The fourth proportional to 14,815.53, 20,445.84 and 8,101.53 is: 11,180.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,815.53 : 20,445.84 = 8,101.53 : x
  2. Step 2: Convert to fraction form
    14,815.53/20,445.84 = 8,101.53/x
  3. Step 3: Cross multiply
    14,815.53x = 20,445.84 × 8,101.53
  4. Step 4: Simplify right side
    14,815.53x = 165,642,586.14
  5. Step 5: Solve for x
    x = 165,642,586.14/14,815.53
  6. Step 6: Final answer
    x = 11,180.33

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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.