Home / 12,904.24-19,356.60-4,139.20

Finding the Fourth Proportional to 12,904.24, 19,356.60 and 4,139.20

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Solution

The fourth proportional to 12,904.24, 19,356.60 and 4,139.20 is: 6,208.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,904.24 : 19,356.60 = 4,139.20 : x
  2. Step 2: Convert to fraction form
    12,904.24/19,356.60 = 4,139.20/x
  3. Step 3: Cross multiply
    12,904.24x = 19,356.60 × 4,139.20
  4. Step 4: Simplify right side
    12,904.24x = 80,120,838.72
  5. Step 5: Solve for x
    x = 80,120,838.72/12,904.24
  6. Step 6: Final answer
    x = 6,208.88

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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.