Home / 13,043.76-19,550.64-5,640.78

Finding the Fourth Proportional to 13,043.76, 19,550.64 and 5,640.78

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Solution

The fourth proportional to 13,043.76, 19,550.64 and 5,640.78 is: 8,454.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,043.76 : 19,550.64 = 5,640.78 : x
  2. Step 2: Convert to fraction form
    13,043.76/19,550.64 = 5,640.78/x
  3. Step 3: Cross multiply
    13,043.76x = 19,550.64 × 5,640.78
  4. Step 4: Simplify right side
    13,043.76x = 110,280,859.10
  5. Step 5: Solve for x
    x = 110,280,859.10/13,043.76
  6. Step 6: Final answer
    x = 8,454.68

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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.