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Finding the Fourth Proportional to 12,671.44, 19,000.80 and 3,904.24

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Solution

The fourth proportional to 12,671.44, 19,000.80 and 3,904.24 is: 5,854.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,671.44 : 19,000.80 = 3,904.24 : x
  2. Step 2: Convert to fraction form
    12,671.44/19,000.80 = 3,904.24/x
  3. Step 3: Cross multiply
    12,671.44x = 19,000.80 × 3,904.24
  4. Step 4: Simplify right side
    12,671.44x = 74,183,683.39
  5. Step 5: Solve for x
    x = 74,183,683.39/12,671.44
  6. Step 6: Final answer
    x = 5,854.40

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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.