Home / 13,385.09-18,469.92-7,415.25

Finding the Fourth Proportional to 13,385.09, 18,469.92 and 7,415.25

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Solution

The fourth proportional to 13,385.09, 18,469.92 and 7,415.25 is: 10,232.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,385.09 : 18,469.92 = 7,415.25 : x
  2. Step 2: Convert to fraction form
    13,385.09/18,469.92 = 7,415.25/x
  3. Step 3: Cross multiply
    13,385.09x = 18,469.92 × 7,415.25
  4. Step 4: Simplify right side
    13,385.09x = 136,959,074.28
  5. Step 5: Solve for x
    x = 136,959,074.28/13,385.09
  6. Step 6: Final answer
    x = 10,232.22

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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.