Home / 13,272.11-18,317.61-9,698.80

Finding the Fourth Proportional to 13,272.11, 18,317.61 and 9,698.80

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Solution

The fourth proportional to 13,272.11, 18,317.61 and 9,698.80 is: 13,385.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,272.11 : 18,317.61 = 9,698.80 : x
  2. Step 2: Convert to fraction form
    13,272.11/18,317.61 = 9,698.80/x
  3. Step 3: Cross multiply
    13,272.11x = 18,317.61 × 9,698.80
  4. Step 4: Simplify right side
    13,272.11x = 177,658,787.37
  5. Step 5: Solve for x
    x = 177,658,787.37/13,272.11
  6. Step 6: Final answer
    x = 13,385.87

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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.