Home / 15,464.22-21,340.77-8,390.61

Finding the Fourth Proportional to 15,464.22, 21,340.77 and 8,390.61

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Solution

The fourth proportional to 15,464.22, 21,340.77 and 8,390.61 is: 11,579.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,464.22 : 21,340.77 = 8,390.61 : x
  2. Step 2: Convert to fraction form
    15,464.22/21,340.77 = 8,390.61/x
  3. Step 3: Cross multiply
    15,464.22x = 21,340.77 × 8,390.61
  4. Step 4: Simplify right side
    15,464.22x = 179,062,078.17
  5. Step 5: Solve for x
    x = 179,062,078.17/15,464.22
  6. Step 6: Final answer
    x = 11,579.12

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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.