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Finding the Fourth Proportional to 12,554.60, 18,819.14 and 6,715.31

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Solution

The fourth proportional to 12,554.60, 18,819.14 and 6,715.31 is: 10,066.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,554.60 : 18,819.14 = 6,715.31 : x
  2. Step 2: Convert to fraction form
    12,554.60/18,819.14 = 6,715.31/x
  3. Step 3: Cross multiply
    12,554.60x = 18,819.14 × 6,715.31
  4. Step 4: Simplify right side
    12,554.60x = 126,376,231.36
  5. Step 5: Solve for x
    x = 126,376,231.36/12,554.60
  6. Step 6: Final answer
    x = 10,066.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.