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Finding the Fourth Proportional to 14,815.16, 20,445.30 and 8,101.07

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Solution

The fourth proportional to 14,815.16, 20,445.30 and 8,101.07 is: 11,179.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,815.16 : 20,445.30 = 8,101.07 : x
  2. Step 2: Convert to fraction form
    14,815.16/20,445.30 = 8,101.07/x
  3. Step 3: Cross multiply
    14,815.16x = 20,445.30 × 8,101.07
  4. Step 4: Simplify right side
    14,815.16x = 165,628,704.24
  5. Step 5: Solve for x
    x = 165,628,704.24/14,815.16
  6. Step 6: Final answer
    x = 11,179.68

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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.