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Finding the Fourth Proportional to 12,348.29, 18,520.54 and 4,028.29

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Solution

The fourth proportional to 12,348.29, 18,520.54 and 4,028.29 is: 6,041.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,348.29 : 18,520.54 = 4,028.29 : x
  2. Step 2: Convert to fraction form
    12,348.29/18,520.54 = 4,028.29/x
  3. Step 3: Cross multiply
    12,348.29x = 18,520.54 × 4,028.29
  4. Step 4: Simplify right side
    12,348.29x = 74,606,106.08
  5. Step 5: Solve for x
    x = 74,606,106.08/12,348.29
  6. Step 6: Final answer
    x = 6,041.82

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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.