Home / 10,280.21-15,415.50-3,705.53

Finding the Fourth Proportional to 10,280.21, 15,415.50 and 3,705.53

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Solution

The fourth proportional to 10,280.21, 15,415.50 and 3,705.53 is: 5,556.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,280.21 : 15,415.50 = 3,705.53 : x
  2. Step 2: Convert to fraction form
    10,280.21/15,415.50 = 3,705.53/x
  3. Step 3: Cross multiply
    10,280.21x = 15,415.50 × 3,705.53
  4. Step 4: Simplify right side
    10,280.21x = 57,122,520.64
  5. Step 5: Solve for x
    x = 57,122,520.64/10,280.21
  6. Step 6: Final answer
    x = 5,556.55

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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.