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Finding the Fourth Proportional to 12,668.76, 19,016.51 and 10,355.40

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Solution

The fourth proportional to 12,668.76, 19,016.51 and 10,355.40 is: 15,544.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,668.76 : 19,016.51 = 10,355.40 : x
  2. Step 2: Convert to fraction form
    12,668.76/19,016.51 = 10,355.40/x
  3. Step 3: Cross multiply
    12,668.76x = 19,016.51 × 10,355.40
  4. Step 4: Simplify right side
    12,668.76x = 196,923,515.88
  5. Step 5: Solve for x
    x = 196,923,515.88/12,668.76
  6. Step 6: Final answer
    x = 15,544.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.