Home / 15,960.28-22,025.78-8,790.50

Finding the Fourth Proportional to 15,960.28, 22,025.78 and 8,790.50

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Solution

The fourth proportional to 15,960.28, 22,025.78 and 8,790.50 is: 12,131.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,960.28 : 22,025.78 = 8,790.50 : x
  2. Step 2: Convert to fraction form
    15,960.28/22,025.78 = 8,790.50/x
  3. Step 3: Cross multiply
    15,960.28x = 22,025.78 × 8,790.50
  4. Step 4: Simplify right side
    15,960.28x = 193,617,619.09
  5. Step 5: Solve for x
    x = 193,617,619.09/15,960.28
  6. Step 6: Final answer
    x = 12,131.22

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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.