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Finding the Fourth Proportional to 8,705.88, 13,074.48 and 8,353.53

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Solution

The fourth proportional to 8,705.88, 13,074.48 and 8,353.53 is: 12,545.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,705.88 : 13,074.48 = 8,353.53 : x
  2. Step 2: Convert to fraction form
    8,705.88/13,074.48 = 8,353.53/x
  3. Step 3: Cross multiply
    8,705.88x = 13,074.48 × 8,353.53
  4. Step 4: Simplify right side
    8,705.88x = 109,218,060.91
  5. Step 5: Solve for x
    x = 109,218,060.91/8,705.88
  6. Step 6: Final answer
    x = 12,545.32

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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.