Home / 28,880.20-43,320.30-8,103.70

Finding the Fourth Proportional to 28,880.20, 43,320.30 and 8,103.70

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Solution

The fourth proportional to 28,880.20, 43,320.30 and 8,103.70 is: 12,155.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,880.20 : 43,320.30 = 8,103.70 : x
  2. Step 2: Convert to fraction form
    28,880.20/43,320.30 = 8,103.70/x
  3. Step 3: Cross multiply
    28,880.20x = 43,320.30 × 8,103.70
  4. Step 4: Simplify right side
    28,880.20x = 351,054,715.11
  5. Step 5: Solve for x
    x = 351,054,715.11/28,880.20
  6. Step 6: Final answer
    x = 12,155.55

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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.