Home / 12,647.20-18,971.68-3,888.24

Finding the Fourth Proportional to 12,647.20, 18,971.68 and 3,888.24

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Solution

The fourth proportional to 12,647.20, 18,971.68 and 3,888.24 is: 5,832.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,647.20 : 18,971.68 = 3,888.24 : x
  2. Step 2: Convert to fraction form
    12,647.20/18,971.68 = 3,888.24/x
  3. Step 3: Cross multiply
    12,647.20x = 18,971.68 × 3,888.24
  4. Step 4: Simplify right side
    12,647.20x = 73,766,445.04
  5. Step 5: Solve for x
    x = 73,766,445.04/12,647.20
  6. Step 6: Final answer
    x = 5,832.63

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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.