Home / 11,320.40-16,981.34-3,000.30

Finding the Fourth Proportional to 11,320.40, 16,981.34 and 3,000.30

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Solution

The fourth proportional to 11,320.40, 16,981.34 and 3,000.30 is: 4,500.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,320.40 : 16,981.34 = 3,000.30 : x
  2. Step 2: Convert to fraction form
    11,320.40/16,981.34 = 3,000.30/x
  3. Step 3: Cross multiply
    11,320.40x = 16,981.34 × 3,000.30
  4. Step 4: Simplify right side
    11,320.40x = 50,949,114.40
  5. Step 5: Solve for x
    x = 50,949,114.40/11,320.40
  6. Step 6: Final answer
    x = 4,500.65

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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.