Home / 12,235.10-18,346.44-5,212.40

Finding the Fourth Proportional to 12,235.10, 18,346.44 and 5,212.40

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Solution

The fourth proportional to 12,235.10, 18,346.44 and 5,212.40 is: 7,815.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,235.10 : 18,346.44 = 5,212.40 : x
  2. Step 2: Convert to fraction form
    12,235.10/18,346.44 = 5,212.40/x
  3. Step 3: Cross multiply
    12,235.10x = 18,346.44 × 5,212.40
  4. Step 4: Simplify right side
    12,235.10x = 95,628,983.86
  5. Step 5: Solve for x
    x = 95,628,983.86/12,235.10
  6. Step 6: Final answer
    x = 7,815.95

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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.