Home / 11,211.45-16,817.13-3,420.24

Finding the Fourth Proportional to 11,211.45, 16,817.13 and 3,420.24

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Solution

The fourth proportional to 11,211.45, 16,817.13 and 3,420.24 is: 5,130.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,211.45 : 16,817.13 = 3,420.24 : x
  2. Step 2: Convert to fraction form
    11,211.45/16,817.13 = 3,420.24/x
  3. Step 3: Cross multiply
    11,211.45x = 16,817.13 × 3,420.24
  4. Step 4: Simplify right side
    11,211.45x = 57,518,620.71
  5. Step 5: Solve for x
    x = 57,518,620.71/11,211.45
  6. Step 6: Final answer
    x = 5,130.35

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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.