Home / 18,007.70-27,011.55-11,438.60

Finding the Fourth Proportional to 18,007.70, 27,011.55 and 11,438.60

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Solution

The fourth proportional to 18,007.70, 27,011.55 and 11,438.60 is: 17,157.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,007.70 : 27,011.55 = 11,438.60 : x
  2. Step 2: Convert to fraction form
    18,007.70/27,011.55 = 11,438.60/x
  3. Step 3: Cross multiply
    18,007.70x = 27,011.55 × 11,438.60
  4. Step 4: Simplify right side
    18,007.70x = 308,974,315.83
  5. Step 5: Solve for x
    x = 308,974,315.83/18,007.70
  6. Step 6: Final answer
    x = 17,157.90

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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.