Home / 12,929.92-19,396.80-4,720

Finding the Fourth Proportional to 12,929.92, 19,396.80 and 4,720

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Solution

The fourth proportional to 12,929.92, 19,396.80 and 4,720 is: 7,080.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,929.92 : 19,396.80 = 4,720 : x
  2. Step 2: Convert to fraction form
    12,929.92/19,396.80 = 4,720/x
  3. Step 3: Cross multiply
    12,929.92x = 19,396.80 × 4,720
  4. Step 4: Simplify right side
    12,929.92x = 91,552,896
  5. Step 5: Solve for x
    x = 91,552,896/12,929.92
  6. Step 6: Final answer
    x = 7,080.70

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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.