Home / 13,253.78-19,873.10-5,453.30

Finding the Fourth Proportional to 13,253.78, 19,873.10 and 5,453.30

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Solution

The fourth proportional to 13,253.78, 19,873.10 and 5,453.30 is: 8,176.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,253.78 : 19,873.10 = 5,453.30 : x
  2. Step 2: Convert to fraction form
    13,253.78/19,873.10 = 5,453.30/x
  3. Step 3: Cross multiply
    13,253.78x = 19,873.10 × 5,453.30
  4. Step 4: Simplify right side
    13,253.78x = 108,373,976.23
  5. Step 5: Solve for x
    x = 108,373,976.23/13,253.78
  6. Step 6: Final answer
    x = 8,176.84

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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.