Home / 12,749.78-19,124.36-3,389.82

Finding the Fourth Proportional to 12,749.78, 19,124.36 and 3,389.82

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Solution

The fourth proportional to 12,749.78, 19,124.36 and 3,389.82 is: 5,084.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,749.78 : 19,124.36 = 3,389.82 : x
  2. Step 2: Convert to fraction form
    12,749.78/19,124.36 = 3,389.82/x
  3. Step 3: Cross multiply
    12,749.78x = 19,124.36 × 3,389.82
  4. Step 4: Simplify right side
    12,749.78x = 64,828,138.02
  5. Step 5: Solve for x
    x = 64,828,138.02/12,749.78
  6. Step 6: Final answer
    x = 5,084.65

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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.