Home / 12,749.77-19,125.33-3,985.36

Finding the Fourth Proportional to 12,749.77, 19,125.33 and 3,985.36

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Solution

The fourth proportional to 12,749.77, 19,125.33 and 3,985.36 is: 5,978.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,749.77 : 19,125.33 = 3,985.36 : x
  2. Step 2: Convert to fraction form
    12,749.77/19,125.33 = 3,985.36/x
  3. Step 3: Cross multiply
    12,749.77x = 19,125.33 × 3,985.36
  4. Step 4: Simplify right side
    12,749.77x = 76,221,392.41
  5. Step 5: Solve for x
    x = 76,221,392.41/12,749.77
  6. Step 6: Final answer
    x = 5,978.26

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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.