Home / 12,218.66-18,319.77-5,641.22

Finding the Fourth Proportional to 12,218.66, 18,319.77 and 5,641.22

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Solution

The fourth proportional to 12,218.66, 18,319.77 and 5,641.22 is: 8,458.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,218.66 : 18,319.77 = 5,641.22 : x
  2. Step 2: Convert to fraction form
    12,218.66/18,319.77 = 5,641.22/x
  3. Step 3: Cross multiply
    12,218.66x = 18,319.77 × 5,641.22
  4. Step 4: Simplify right side
    12,218.66x = 103,345,852.92
  5. Step 5: Solve for x
    x = 103,345,852.92/12,218.66
  6. Step 6: Final answer
    x = 8,458.03

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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.