Home / 11,725.32-16,180.20-6,420.20

Finding the Fourth Proportional to 11,725.32, 16,180.20 and 6,420.20

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Solution

The fourth proportional to 11,725.32, 16,180.20 and 6,420.20 is: 8,859.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,725.32 : 16,180.20 = 6,420.20 : x
  2. Step 2: Convert to fraction form
    11,725.32/16,180.20 = 6,420.20/x
  3. Step 3: Cross multiply
    11,725.32x = 16,180.20 × 6,420.20
  4. Step 4: Simplify right side
    11,725.32x = 103,880,120.04
  5. Step 5: Solve for x
    x = 103,880,120.04/11,725.32
  6. Step 6: Final answer
    x = 8,859.47

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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.