Home / 15,406.45-21,260.99-8,600.79

Finding the Fourth Proportional to 15,406.45, 21,260.99 and 8,600.79

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Solution

The fourth proportional to 15,406.45, 21,260.99 and 8,600.79 is: 11,869.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,406.45 : 21,260.99 = 8,600.79 : x
  2. Step 2: Convert to fraction form
    15,406.45/21,260.99 = 8,600.79/x
  3. Step 3: Cross multiply
    15,406.45x = 21,260.99 × 8,600.79
  4. Step 4: Simplify right side
    15,406.45x = 182,861,310.18
  5. Step 5: Solve for x
    x = 182,861,310.18/15,406.45
  6. Step 6: Final answer
    x = 11,869.14

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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.