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Finding the Fourth Proportional to 15,879.72, 23,830.56 and 5,491.56

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Solution

The fourth proportional to 15,879.72, 23,830.56 and 5,491.56 is: 8,241.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,879.72 : 23,830.56 = 5,491.56 : x
  2. Step 2: Convert to fraction form
    15,879.72/23,830.56 = 5,491.56/x
  3. Step 3: Cross multiply
    15,879.72x = 23,830.56 × 5,491.56
  4. Step 4: Simplify right side
    15,879.72x = 130,866,950.07
  5. Step 5: Solve for x
    x = 130,866,950.07/15,879.72
  6. Step 6: Final answer
    x = 8,241.14

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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.