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Finding the Fourth Proportional to 15,879.78, 23,803.83 and 7,958.07

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Solution

The fourth proportional to 15,879.78, 23,803.83 and 7,958.07 is: 11,929.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,879.78 : 23,803.83 = 7,958.07 : x
  2. Step 2: Convert to fraction form
    15,879.78/23,803.83 = 7,958.07/x
  3. Step 3: Cross multiply
    15,879.78x = 23,803.83 × 7,958.07
  4. Step 4: Simplify right side
    15,879.78x = 189,432,545.41
  5. Step 5: Solve for x
    x = 189,432,545.41/15,879.78
  6. Step 6: Final answer
    x = 11,929.17

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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.