Home / 12,990.48-19,474.08-4,668.56

Finding the Fourth Proportional to 12,990.48, 19,474.08 and 4,668.56

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Solution

The fourth proportional to 12,990.48, 19,474.08 and 4,668.56 is: 6,998.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,990.48 : 19,474.08 = 4,668.56 : x
  2. Step 2: Convert to fraction form
    12,990.48/19,474.08 = 4,668.56/x
  3. Step 3: Cross multiply
    12,990.48x = 19,474.08 × 4,668.56
  4. Step 4: Simplify right side
    12,990.48x = 90,915,910.92
  5. Step 5: Solve for x
    x = 90,915,910.92/12,990.48
  6. Step 6: Final answer
    x = 6,998.66

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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.