Home / 13,201.60-19,802.40-3,340.80

Finding the Fourth Proportional to 13,201.60, 19,802.40 and 3,340.80

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Solution

The fourth proportional to 13,201.60, 19,802.40 and 3,340.80 is: 5,011.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,201.60 : 19,802.40 = 3,340.80 : x
  2. Step 2: Convert to fraction form
    13,201.60/19,802.40 = 3,340.80/x
  3. Step 3: Cross multiply
    13,201.60x = 19,802.40 × 3,340.80
  4. Step 4: Simplify right side
    13,201.60x = 66,155,857.92
  5. Step 5: Solve for x
    x = 66,155,857.92/13,201.60
  6. Step 6: Final answer
    x = 5,011.20

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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.