Home / 13,635.78-18,817.60-7,586.50

Finding the Fourth Proportional to 13,635.78, 18,817.60 and 7,586.50

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Solution

The fourth proportional to 13,635.78, 18,817.60 and 7,586.50 is: 10,469.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,635.78 : 18,817.60 = 7,586.50 : x
  2. Step 2: Convert to fraction form
    13,635.78/18,817.60 = 7,586.50/x
  3. Step 3: Cross multiply
    13,635.78x = 18,817.60 × 7,586.50
  4. Step 4: Simplify right side
    13,635.78x = 142,759,722.40
  5. Step 5: Solve for x
    x = 142,759,722.40/13,635.78
  6. Step 6: Final answer
    x = 10,469.49

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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.