Home / 10,887.80-15,025.20-6,172.40

Finding the Fourth Proportional to 10,887.80, 15,025.20 and 6,172.40

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Solution

The fourth proportional to 10,887.80, 15,025.20 and 6,172.40 is: 8,517.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,887.80 : 15,025.20 = 6,172.40 : x
  2. Step 2: Convert to fraction form
    10,887.80/15,025.20 = 6,172.40/x
  3. Step 3: Cross multiply
    10,887.80x = 15,025.20 × 6,172.40
  4. Step 4: Simplify right side
    10,887.80x = 92,741,544.48
  5. Step 5: Solve for x
    x = 92,741,544.48/10,887.80
  6. Step 6: Final answer
    x = 8,517.93

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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.