Home / 13,323.96-18,389.70-7,662.60

Finding the Fourth Proportional to 13,323.96, 18,389.70 and 7,662.60

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Solution

The fourth proportional to 13,323.96, 18,389.70 and 7,662.60 is: 10,575.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,323.96 : 18,389.70 = 7,662.60 : x
  2. Step 2: Convert to fraction form
    13,323.96/18,389.70 = 7,662.60/x
  3. Step 3: Cross multiply
    13,323.96x = 18,389.70 × 7,662.60
  4. Step 4: Simplify right side
    13,323.96x = 140,912,915.22
  5. Step 5: Solve for x
    x = 140,912,915.22/13,323.96
  6. Step 6: Final answer
    x = 10,575.90

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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.