Home / 13,868.92-19,137.60-8,203.87

Finding the Fourth Proportional to 13,868.92, 19,137.60 and 8,203.87

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Solution

The fourth proportional to 13,868.92, 19,137.60 and 8,203.87 is: 11,320.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,868.92 : 19,137.60 = 8,203.87 : x
  2. Step 2: Convert to fraction form
    13,868.92/19,137.60 = 8,203.87/x
  3. Step 3: Cross multiply
    13,868.92x = 19,137.60 × 8,203.87
  4. Step 4: Simplify right side
    13,868.92x = 157,002,382.51
  5. Step 5: Solve for x
    x = 157,002,382.51/13,868.92
  6. Step 6: Final answer
    x = 11,320.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.