Home / 15,530.06-21,435.36-8,819.66

Finding the Fourth Proportional to 15,530.06, 21,435.36 and 8,819.66

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Solution

The fourth proportional to 15,530.06, 21,435.36 and 8,819.66 is: 12,173.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,530.06 : 21,435.36 = 8,819.66 : x
  2. Step 2: Convert to fraction form
    15,530.06/21,435.36 = 8,819.66/x
  3. Step 3: Cross multiply
    15,530.06x = 21,435.36 × 8,819.66
  4. Step 4: Simplify right side
    15,530.06x = 189,052,587.18
  5. Step 5: Solve for x
    x = 189,052,587.18/15,530.06
  6. Step 6: Final answer
    x = 12,173.33

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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.