Home / 12,455.67-18,686.66-4,138.02

Finding the Fourth Proportional to 12,455.67, 18,686.66 and 4,138.02

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Solution

The fourth proportional to 12,455.67, 18,686.66 and 4,138.02 is: 6,208.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,455.67 : 18,686.66 = 4,138.02 : x
  2. Step 2: Convert to fraction form
    12,455.67/18,686.66 = 4,138.02/x
  3. Step 3: Cross multiply
    12,455.67x = 18,686.66 × 4,138.02
  4. Step 4: Simplify right side
    12,455.67x = 77,325,752.12
  5. Step 5: Solve for x
    x = 77,325,752.12/12,455.67
  6. Step 6: Final answer
    x = 6,208.08

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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.