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Finding the Fourth Proportional to 12,671.82, 19,024.98 and 7,129.07

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Solution

The fourth proportional to 12,671.82, 19,024.98 and 7,129.07 is: 10,703.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,671.82 : 19,024.98 = 7,129.07 : x
  2. Step 2: Convert to fraction form
    12,671.82/19,024.98 = 7,129.07/x
  3. Step 3: Cross multiply
    12,671.82x = 19,024.98 × 7,129.07
  4. Step 4: Simplify right side
    12,671.82x = 135,630,435.00
  5. Step 5: Solve for x
    x = 135,630,435.00/12,671.82
  6. Step 6: Final answer
    x = 10,703.31

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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.