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Finding the Fourth Proportional to 10,416.63, 15,606.73 and 8,672.85

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Solution

The fourth proportional to 10,416.63, 15,606.73 and 8,672.85 is: 12,994.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,416.63 : 15,606.73 = 8,672.85 : x
  2. Step 2: Convert to fraction form
    10,416.63/15,606.73 = 8,672.85/x
  3. Step 3: Cross multiply
    10,416.63x = 15,606.73 × 8,672.85
  4. Step 4: Simplify right side
    10,416.63x = 135,354,839.12
  5. Step 5: Solve for x
    x = 135,354,839.12/10,416.63
  6. Step 6: Final answer
    x = 12,994.11

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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.