Home / 10,238.86-15,363.24-4,978.36

Finding the Fourth Proportional to 10,238.86, 15,363.24 and 4,978.36

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Solution

The fourth proportional to 10,238.86, 15,363.24 and 4,978.36 is: 7,469.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,238.86 : 15,363.24 = 4,978.36 : x
  2. Step 2: Convert to fraction form
    10,238.86/15,363.24 = 4,978.36/x
  3. Step 3: Cross multiply
    10,238.86x = 15,363.24 × 4,978.36
  4. Step 4: Simplify right side
    10,238.86x = 76,483,739.49
  5. Step 5: Solve for x
    x = 76,483,739.49/10,238.86
  6. Step 6: Final answer
    x = 7,469.95

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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.