Home / 13,520.84-18,754.22-13,161.20

Finding the Fourth Proportional to 13,520.84, 18,754.22 and 13,161.20

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Solution

The fourth proportional to 13,520.84, 18,754.22 and 13,161.20 is: 18,255.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,520.84 : 18,754.22 = 13,161.20 : x
  2. Step 2: Convert to fraction form
    13,520.84/18,754.22 = 13,161.20/x
  3. Step 3: Cross multiply
    13,520.84x = 18,754.22 × 13,161.20
  4. Step 4: Simplify right side
    13,520.84x = 246,828,040.26
  5. Step 5: Solve for x
    x = 246,828,040.26/13,520.84
  6. Step 6: Final answer
    x = 18,255.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.