Home / 12,206.70-18,318.87-9,440.10

Finding the Fourth Proportional to 12,206.70, 18,318.87 and 9,440.10

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Solution

The fourth proportional to 12,206.70, 18,318.87 and 9,440.10 is: 14,166.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,206.70 : 18,318.87 = 9,440.10 : x
  2. Step 2: Convert to fraction form
    12,206.70/18,318.87 = 9,440.10/x
  3. Step 3: Cross multiply
    12,206.70x = 18,318.87 × 9,440.10
  4. Step 4: Simplify right side
    12,206.70x = 172,931,964.69
  5. Step 5: Solve for x
    x = 172,931,964.69/12,206.70
  6. Step 6: Final answer
    x = 14,166.97

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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.