Home / 13,850.19-20,868.77-11,439.02

Finding the Fourth Proportional to 13,850.19, 20,868.77 and 11,439.02

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Solution

The fourth proportional to 13,850.19, 20,868.77 and 11,439.02 is: 17,235.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,850.19 : 20,868.77 = 11,439.02 : x
  2. Step 2: Convert to fraction form
    13,850.19/20,868.77 = 11,439.02/x
  3. Step 3: Cross multiply
    13,850.19x = 20,868.77 × 11,439.02
  4. Step 4: Simplify right side
    13,850.19x = 238,718,358.17
  5. Step 5: Solve for x
    x = 238,718,358.17/13,850.19
  6. Step 6: Final answer
    x = 17,235.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.