Home / 13,752.10-20,621.99-3,889.06

Finding the Fourth Proportional to 13,752.10, 20,621.99 and 3,889.06

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Solution

The fourth proportional to 13,752.10, 20,621.99 and 3,889.06 is: 5,831.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,752.10 : 20,621.99 = 3,889.06 : x
  2. Step 2: Convert to fraction form
    13,752.10/20,621.99 = 3,889.06/x
  3. Step 3: Cross multiply
    13,752.10x = 20,621.99 × 3,889.06
  4. Step 4: Simplify right side
    13,752.10x = 80,200,156.43
  5. Step 5: Solve for x
    x = 80,200,156.43/13,752.10
  6. Step 6: Final answer
    x = 5,831.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.