Home / 12,617.08-18,937.28-6,381.48

Finding the Fourth Proportional to 12,617.08, 18,937.28 and 6,381.48

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Solution

The fourth proportional to 12,617.08, 18,937.28 and 6,381.48 is: 9,578.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,617.08 : 18,937.28 = 6,381.48 : x
  2. Step 2: Convert to fraction form
    12,617.08/18,937.28 = 6,381.48/x
  3. Step 3: Cross multiply
    12,617.08x = 18,937.28 × 6,381.48
  4. Step 4: Simplify right side
    12,617.08x = 120,847,873.57
  5. Step 5: Solve for x
    x = 120,847,873.57/12,617.08
  6. Step 6: Final answer
    x = 9,578.12

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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.