Home / 12,824.70-19,239.60-5,429.10

Finding the Fourth Proportional to 12,824.70, 19,239.60 and 5,429.10

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Solution

The fourth proportional to 12,824.70, 19,239.60 and 5,429.10 is: 8,144.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,824.70 : 19,239.60 = 5,429.10 : x
  2. Step 2: Convert to fraction form
    12,824.70/19,239.60 = 5,429.10/x
  3. Step 3: Cross multiply
    12,824.70x = 19,239.60 × 5,429.10
  4. Step 4: Simplify right side
    12,824.70x = 104,453,712.36
  5. Step 5: Solve for x
    x = 104,453,712.36/12,824.70
  6. Step 6: Final answer
    x = 8,144.73

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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.