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Finding the Fourth Proportional to 12,671.70, 19,007.55 and 5,746.20

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Solution

The fourth proportional to 12,671.70, 19,007.55 and 5,746.20 is: 8,619.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,671.70 : 19,007.55 = 5,746.20 : x
  2. Step 2: Convert to fraction form
    12,671.70/19,007.55 = 5,746.20/x
  3. Step 3: Cross multiply
    12,671.70x = 19,007.55 × 5,746.20
  4. Step 4: Simplify right side
    12,671.70x = 109,221,183.81
  5. Step 5: Solve for x
    x = 109,221,183.81/12,671.70
  6. Step 6: Final answer
    x = 8,619.30

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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.