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Finding the Fourth Proportional to 15,069.15, 20,795.58 and 8,354.88

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Solution

The fourth proportional to 15,069.15, 20,795.58 and 8,354.88 is: 11,529.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,069.15 : 20,795.58 = 8,354.88 : x
  2. Step 2: Convert to fraction form
    15,069.15/20,795.58 = 8,354.88/x
  3. Step 3: Cross multiply
    15,069.15x = 20,795.58 × 8,354.88
  4. Step 4: Simplify right side
    15,069.15x = 173,744,575.43
  5. Step 5: Solve for x
    x = 173,744,575.43/15,069.15
  6. Step 6: Final answer
    x = 11,529.82

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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.