Home / 12,868.52-19,289.55-7,309.99

Finding the Fourth Proportional to 12,868.52, 19,289.55 and 7,309.99

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Solution

The fourth proportional to 12,868.52, 19,289.55 and 7,309.99 is: 10,957.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,868.52 : 19,289.55 = 7,309.99 : x
  2. Step 2: Convert to fraction form
    12,868.52/19,289.55 = 7,309.99/x
  3. Step 3: Cross multiply
    12,868.52x = 19,289.55 × 7,309.99
  4. Step 4: Simplify right side
    12,868.52x = 141,006,469.13
  5. Step 5: Solve for x
    x = 141,006,469.13/12,868.52
  6. Step 6: Final answer
    x = 10,957.48

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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.