Home / 12,254.29-18,378.24-3,930.02

Finding the Fourth Proportional to 12,254.29, 18,378.24 and 3,930.02

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Solution

The fourth proportional to 12,254.29, 18,378.24 and 3,930.02 is: 5,894.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,254.29 : 18,378.24 = 3,930.02 : x
  2. Step 2: Convert to fraction form
    12,254.29/18,378.24 = 3,930.02/x
  3. Step 3: Cross multiply
    12,254.29x = 18,378.24 × 3,930.02
  4. Step 4: Simplify right side
    12,254.29x = 72,226,835.16
  5. Step 5: Solve for x
    x = 72,226,835.16/12,254.29
  6. Step 6: Final answer
    x = 5,894.01

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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.