Home / 13,630.46-18,811.19-7,662.69

Finding the Fourth Proportional to 13,630.46, 18,811.19 and 7,662.69

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Solution

The fourth proportional to 13,630.46, 18,811.19 and 7,662.69 is: 10,575.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,630.46 : 18,811.19 = 7,662.69 : x
  2. Step 2: Convert to fraction form
    13,630.46/18,811.19 = 7,662.69/x
  3. Step 3: Cross multiply
    13,630.46x = 18,811.19 × 7,662.69
  4. Step 4: Simplify right side
    13,630.46x = 144,144,279.19
  5. Step 5: Solve for x
    x = 144,144,279.19/13,630.46
  6. Step 6: Final answer
    x = 10,575.16

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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.