Home / 12,120.81-18,177.69-4,723.52

Finding the Fourth Proportional to 12,120.81, 18,177.69 and 4,723.52

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Solution

The fourth proportional to 12,120.81, 18,177.69 and 4,723.52 is: 7,083.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,120.81 : 18,177.69 = 4,723.52 : x
  2. Step 2: Convert to fraction form
    12,120.81/18,177.69 = 4,723.52/x
  3. Step 3: Cross multiply
    12,120.81x = 18,177.69 × 4,723.52
  4. Step 4: Simplify right side
    12,120.81x = 85,862,595.81
  5. Step 5: Solve for x
    x = 85,862,595.81/12,120.81
  6. Step 6: Final answer
    x = 7,083.90

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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.