Home / 12,146.29-18,219.43-4,745.56

Finding the Fourth Proportional to 12,146.29, 18,219.43 and 4,745.56

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Solution

The fourth proportional to 12,146.29, 18,219.43 and 4,745.56 is: 7,118.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,146.29 : 18,219.43 = 4,745.56 : x
  2. Step 2: Convert to fraction form
    12,146.29/18,219.43 = 4,745.56/x
  3. Step 3: Cross multiply
    12,146.29x = 18,219.43 × 4,745.56
  4. Step 4: Simplify right side
    12,146.29x = 86,461,398.23
  5. Step 5: Solve for x
    x = 86,461,398.23/12,146.29
  6. Step 6: Final answer
    x = 7,118.34

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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.