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Finding the Fourth Proportional to 12,165.91, 18,247.95 and 3,401.51

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Solution

The fourth proportional to 12,165.91, 18,247.95 and 3,401.51 is: 5,102.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,165.91 : 18,247.95 = 3,401.51 : x
  2. Step 2: Convert to fraction form
    12,165.91/18,247.95 = 3,401.51/x
  3. Step 3: Cross multiply
    12,165.91x = 18,247.95 × 3,401.51
  4. Step 4: Simplify right side
    12,165.91x = 62,070,493.16
  5. Step 5: Solve for x
    x = 62,070,493.16/12,165.91
  6. Step 6: Final answer
    x = 5,102.00

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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.