Home / 13,868.73-20,803.95-5,109.75

Finding the Fourth Proportional to 13,868.73, 20,803.95 and 5,109.75

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Solution

The fourth proportional to 13,868.73, 20,803.95 and 5,109.75 is: 7,664.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,868.73 : 20,803.95 = 5,109.75 : x
  2. Step 2: Convert to fraction form
    13,868.73/20,803.95 = 5,109.75/x
  3. Step 3: Cross multiply
    13,868.73x = 20,803.95 × 5,109.75
  4. Step 4: Simplify right side
    13,868.73x = 106,302,983.51
  5. Step 5: Solve for x
    x = 106,302,983.51/13,868.73
  6. Step 6: Final answer
    x = 7,664.94

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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.