Home / 13,630.48-18,812.05-7,662.64

Finding the Fourth Proportional to 13,630.48, 18,812.05 and 7,662.64

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Solution

The fourth proportional to 13,630.48, 18,812.05 and 7,662.64 is: 10,575.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,630.48 : 18,812.05 = 7,662.64 : x
  2. Step 2: Convert to fraction form
    13,630.48/18,812.05 = 7,662.64/x
  3. Step 3: Cross multiply
    13,630.48x = 18,812.05 × 7,662.64
  4. Step 4: Simplify right side
    13,630.48x = 144,149,872.75
  5. Step 5: Solve for x
    x = 144,149,872.75/13,630.48
  6. Step 6: Final answer
    x = 10,575.56

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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.