Home / 12,990.24-17,927.62-7,324.70

Finding the Fourth Proportional to 12,990.24, 17,927.62 and 7,324.70

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Solution

The fourth proportional to 12,990.24, 17,927.62 and 7,324.70 is: 10,108.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,990.24 : 17,927.62 = 7,324.70 : x
  2. Step 2: Convert to fraction form
    12,990.24/17,927.62 = 7,324.70/x
  3. Step 3: Cross multiply
    12,990.24x = 17,927.62 × 7,324.70
  4. Step 4: Simplify right side
    12,990.24x = 131,314,330.26
  5. Step 5: Solve for x
    x = 131,314,330.26/12,990.24
  6. Step 6: Final answer
    x = 10,108.69

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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.