Home / 13,752.72-20,632.32-4,989.60

Finding the Fourth Proportional to 13,752.72, 20,632.32 and 4,989.60

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Solution

The fourth proportional to 13,752.72, 20,632.32 and 4,989.60 is: 7,485.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,752.72 : 20,632.32 = 4,989.60 : x
  2. Step 2: Convert to fraction form
    13,752.72/20,632.32 = 4,989.60/x
  3. Step 3: Cross multiply
    13,752.72x = 20,632.32 × 4,989.60
  4. Step 4: Simplify right side
    13,752.72x = 102,947,023.87
  5. Step 5: Solve for x
    x = 102,947,023.87/13,752.72
  6. Step 6: Final answer
    x = 7,485.58

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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.