Home / 13,621.50-18,785.19-8,836.46

Finding the Fourth Proportional to 13,621.50, 18,785.19 and 8,836.46

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Solution

The fourth proportional to 13,621.50, 18,785.19 and 8,836.46 is: 12,186.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,621.50 : 18,785.19 = 8,836.46 : x
  2. Step 2: Convert to fraction form
    13,621.50/18,785.19 = 8,836.46/x
  3. Step 3: Cross multiply
    13,621.50x = 18,785.19 × 8,836.46
  4. Step 4: Simplify right side
    13,621.50x = 165,994,580.03
  5. Step 5: Solve for x
    x = 165,994,580.03/13,621.50
  6. Step 6: Final answer
    x = 12,186.22

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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.