Home / 15,638.87-21,581.42-8,926.62

Finding the Fourth Proportional to 15,638.87, 21,581.42 and 8,926.62

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Solution

The fourth proportional to 15,638.87, 21,581.42 and 8,926.62 is: 12,318.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,638.87 : 21,581.42 = 8,926.62 : x
  2. Step 2: Convert to fraction form
    15,638.87/21,581.42 = 8,926.62/x
  3. Step 3: Cross multiply
    15,638.87x = 21,581.42 × 8,926.62
  4. Step 4: Simplify right side
    15,638.87x = 192,649,090.77
  5. Step 5: Solve for x
    x = 192,649,090.77/15,638.87
  6. Step 6: Final answer
    x = 12,318.61

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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.