Home / 13,257.78-18,295.90-7,289.46

Finding the Fourth Proportional to 13,257.78, 18,295.90 and 7,289.46

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Solution

The fourth proportional to 13,257.78, 18,295.90 and 7,289.46 is: 10,059.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,257.78 : 18,295.90 = 7,289.46 : x
  2. Step 2: Convert to fraction form
    13,257.78/18,295.90 = 7,289.46/x
  3. Step 3: Cross multiply
    13,257.78x = 18,295.90 × 7,289.46
  4. Step 4: Simplify right side
    13,257.78x = 133,367,231.21
  5. Step 5: Solve for x
    x = 133,367,231.21/13,257.78
  6. Step 6: Final answer
    x = 10,059.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.