Home / 13,750.55-20,618.07-4,388.36

Finding the Fourth Proportional to 13,750.55, 20,618.07 and 4,388.36

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Solution

The fourth proportional to 13,750.55, 20,618.07 and 4,388.36 is: 6,580.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,750.55 : 20,618.07 = 4,388.36 : x
  2. Step 2: Convert to fraction form
    13,750.55/20,618.07 = 4,388.36/x
  3. Step 3: Cross multiply
    13,750.55x = 20,618.07 × 4,388.36
  4. Step 4: Simplify right side
    13,750.55x = 90,479,410.57
  5. Step 5: Solve for x
    x = 90,479,410.57/13,750.55
  6. Step 6: Final answer
    x = 6,580.06

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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.