Home / 12,750.32-19,128.56-4,429.13

Finding the Fourth Proportional to 12,750.32, 19,128.56 and 4,429.13

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Solution

The fourth proportional to 12,750.32, 19,128.56 and 4,429.13 is: 6,644.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,750.32 : 19,128.56 = 4,429.13 : x
  2. Step 2: Convert to fraction form
    12,750.32/19,128.56 = 4,429.13/x
  3. Step 3: Cross multiply
    12,750.32x = 19,128.56 × 4,429.13
  4. Step 4: Simplify right side
    12,750.32x = 84,722,788.06
  5. Step 5: Solve for x
    x = 84,722,788.06/12,750.32
  6. Step 6: Final answer
    x = 6,644.76

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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.