Home / 10,896.60-16,320.60-8,423.40

Finding the Fourth Proportional to 10,896.60, 16,320.60 and 8,423.40

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Solution

The fourth proportional to 10,896.60, 16,320.60 and 8,423.40 is: 12,616.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,896.60 : 16,320.60 = 8,423.40 : x
  2. Step 2: Convert to fraction form
    10,896.60/16,320.60 = 8,423.40/x
  3. Step 3: Cross multiply
    10,896.60x = 16,320.60 × 8,423.40
  4. Step 4: Simplify right side
    10,896.60x = 137,474,942.04
  5. Step 5: Solve for x
    x = 137,474,942.04/10,896.60
  6. Step 6: Final answer
    x = 12,616.32

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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.