Home / 12,390.12-18,593.82-5,460.84

Finding the Fourth Proportional to 12,390.12, 18,593.82 and 5,460.84

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Solution

The fourth proportional to 12,390.12, 18,593.82 and 5,460.84 is: 8,195.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,390.12 : 18,593.82 = 5,460.84 : x
  2. Step 2: Convert to fraction form
    12,390.12/18,593.82 = 5,460.84/x
  3. Step 3: Cross multiply
    12,390.12x = 18,593.82 × 5,460.84
  4. Step 4: Simplify right side
    12,390.12x = 101,537,876.01
  5. Step 5: Solve for x
    x = 101,537,876.01/12,390.12
  6. Step 6: Final answer
    x = 8,195.07

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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.