Home / 12,647.28-18,965.66-4,325.61

Finding the Fourth Proportional to 12,647.28, 18,965.66 and 4,325.61

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Solution

The fourth proportional to 12,647.28, 18,965.66 and 4,325.61 is: 6,486.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,647.28 : 18,965.66 = 4,325.61 : x
  2. Step 2: Convert to fraction form
    12,647.28/18,965.66 = 4,325.61/x
  3. Step 3: Cross multiply
    12,647.28x = 18,965.66 × 4,325.61
  4. Step 4: Simplify right side
    12,647.28x = 82,038,026.92
  5. Step 5: Solve for x
    x = 82,038,026.92/12,647.28
  6. Step 6: Final answer
    x = 6,486.61

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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.