Home / 12,210.66-18,314.97-3,890.34

Finding the Fourth Proportional to 12,210.66, 18,314.97 and 3,890.34

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Solution

The fourth proportional to 12,210.66, 18,314.97 and 3,890.34 is: 5,835.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,210.66 : 18,314.97 = 3,890.34 : x
  2. Step 2: Convert to fraction form
    12,210.66/18,314.97 = 3,890.34/x
  3. Step 3: Cross multiply
    12,210.66x = 18,314.97 × 3,890.34
  4. Step 4: Simplify right side
    12,210.66x = 71,251,460.39
  5. Step 5: Solve for x
    x = 71,251,460.39/12,210.66
  6. Step 6: Final answer
    x = 5,835.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.