Home / 13,018.60-19,520.70-5,218.60

Finding the Fourth Proportional to 13,018.60, 19,520.70 and 5,218.60

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Solution

The fourth proportional to 13,018.60, 19,520.70 and 5,218.60 is: 7,825.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,018.60 : 19,520.70 = 5,218.60 : x
  2. Step 2: Convert to fraction form
    13,018.60/19,520.70 = 5,218.60/x
  3. Step 3: Cross multiply
    13,018.60x = 19,520.70 × 5,218.60
  4. Step 4: Simplify right side
    13,018.60x = 101,870,725.02
  5. Step 5: Solve for x
    x = 101,870,725.02/13,018.60
  6. Step 6: Final answer
    x = 7,825.01

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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.