Home / 12,147.48-16,764.12-6,842.88

Finding the Fourth Proportional to 12,147.48, 16,764.12 and 6,842.88

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Solution

The fourth proportional to 12,147.48, 16,764.12 and 6,842.88 is: 9,443.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,147.48 : 16,764.12 = 6,842.88 : x
  2. Step 2: Convert to fraction form
    12,147.48/16,764.12 = 6,842.88/x
  3. Step 3: Cross multiply
    12,147.48x = 16,764.12 × 6,842.88
  4. Step 4: Simplify right side
    12,147.48x = 114,714,861.47
  5. Step 5: Solve for x
    x = 114,714,861.47/12,147.48
  6. Step 6: Final answer
    x = 9,443.51

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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.