Home / 11,228.20-16,842.30-7,311.40

Finding the Fourth Proportional to 11,228.20, 16,842.30 and 7,311.40

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Solution

The fourth proportional to 11,228.20, 16,842.30 and 7,311.40 is: 10,967.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,228.20 : 16,842.30 = 7,311.40 : x
  2. Step 2: Convert to fraction form
    11,228.20/16,842.30 = 7,311.40/x
  3. Step 3: Cross multiply
    11,228.20x = 16,842.30 × 7,311.40
  4. Step 4: Simplify right side
    11,228.20x = 123,140,792.22
  5. Step 5: Solve for x
    x = 123,140,792.22/11,228.20
  6. Step 6: Final answer
    x = 10,967.10

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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.