Home / 10,929.12-16,388.56-3,628

Finding the Fourth Proportional to 10,929.12, 16,388.56 and 3,628

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Solution

The fourth proportional to 10,929.12, 16,388.56 and 3,628 is: 5,440.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,929.12 : 16,388.56 = 3,628 : x
  2. Step 2: Convert to fraction form
    10,929.12/16,388.56 = 3,628/x
  3. Step 3: Cross multiply
    10,929.12x = 16,388.56 × 3,628
  4. Step 4: Simplify right side
    10,929.12x = 59,457,695.68
  5. Step 5: Solve for x
    x = 59,457,695.68/10,929.12
  6. Step 6: Final answer
    x = 5,440.30

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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.