Home / 11,439.72-17,159.61-7,515.77

Finding the Fourth Proportional to 11,439.72, 17,159.61 and 7,515.77

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Solution

The fourth proportional to 11,439.72, 17,159.61 and 7,515.77 is: 11,273.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,439.72 : 17,159.61 = 7,515.77 : x
  2. Step 2: Convert to fraction form
    11,439.72/17,159.61 = 7,515.77/x
  3. Step 3: Cross multiply
    11,439.72x = 17,159.61 × 7,515.77
  4. Step 4: Simplify right side
    11,439.72x = 128,967,596.25
  5. Step 5: Solve for x
    x = 128,967,596.25/11,439.72
  6. Step 6: Final answer
    x = 11,273.67

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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.