Home / 11,740.90-17,612.14-3,420.98

Finding the Fourth Proportional to 11,740.90, 17,612.14 and 3,420.98

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Solution

The fourth proportional to 11,740.90, 17,612.14 and 3,420.98 is: 5,131.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,740.90 : 17,612.14 = 3,420.98 : x
  2. Step 2: Convert to fraction form
    11,740.90/17,612.14 = 3,420.98/x
  3. Step 3: Cross multiply
    11,740.90x = 17,612.14 × 3,420.98
  4. Step 4: Simplify right side
    11,740.90x = 60,250,778.70
  5. Step 5: Solve for x
    x = 60,250,778.70/11,740.90
  6. Step 6: Final answer
    x = 5,131.70

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1.5x scale

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.