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Finding the Fourth Proportional to 12,673.96, 19,011.20 and 3,908.88

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Solution

The fourth proportional to 12,673.96, 19,011.20 and 3,908.88 is: 5,863.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,673.96 : 19,011.20 = 3,908.88 : x
  2. Step 2: Convert to fraction form
    12,673.96/19,011.20 = 3,908.88/x
  3. Step 3: Cross multiply
    12,673.96x = 19,011.20 × 3,908.88
  4. Step 4: Simplify right side
    12,673.96x = 74,312,466.25
  5. Step 5: Solve for x
    x = 74,312,466.25/12,673.96
  6. Step 6: Final answer
    x = 5,863.40

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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.