Home / 14,238.42-21,356.98-4,879.28

Finding the Fourth Proportional to 14,238.42, 21,356.98 and 4,879.28

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Solution

The fourth proportional to 14,238.42, 21,356.98 and 4,879.28 is: 7,318.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,238.42 : 21,356.98 = 4,879.28 : x
  2. Step 2: Convert to fraction form
    14,238.42/21,356.98 = 4,879.28/x
  3. Step 3: Cross multiply
    14,238.42x = 21,356.98 × 4,879.28
  4. Step 4: Simplify right side
    14,238.42x = 104,206,685.37
  5. Step 5: Solve for x
    x = 104,206,685.37/14,238.42
  6. Step 6: Final answer
    x = 7,318.70

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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.