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Finding the Fourth Proportional to 12,607.07, 18,922.28 and 6,371.47

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Solution

The fourth proportional to 12,607.07, 18,922.28 and 6,371.47 is: 9,563.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,607.07 : 18,922.28 = 6,371.47 : x
  2. Step 2: Convert to fraction form
    12,607.07/18,922.28 = 6,371.47/x
  3. Step 3: Cross multiply
    12,607.07x = 18,922.28 × 6,371.47
  4. Step 4: Simplify right side
    12,607.07x = 120,562,739.35
  5. Step 5: Solve for x
    x = 120,562,739.35/12,607.07
  6. Step 6: Final answer
    x = 9,563.11

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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.