Home / 15,299.75-21,113.61-8,585.41

Finding the Fourth Proportional to 15,299.75, 21,113.61 and 8,585.41

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Solution

The fourth proportional to 15,299.75, 21,113.61 and 8,585.41 is: 11,847.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,299.75 : 21,113.61 = 8,585.41 : x
  2. Step 2: Convert to fraction form
    15,299.75/21,113.61 = 8,585.41/x
  3. Step 3: Cross multiply
    15,299.75x = 21,113.61 × 8,585.41
  4. Step 4: Simplify right side
    15,299.75x = 181,268,998.43
  5. Step 5: Solve for x
    x = 181,268,998.43/15,299.75
  6. Step 6: Final answer
    x = 11,847.84

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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.