Home / 12,023.19-18,035.81-3,139.70

Finding the Fourth Proportional to 12,023.19, 18,035.81 and 3,139.70

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Solution

The fourth proportional to 12,023.19, 18,035.81 and 3,139.70 is: 4,709.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,023.19 : 18,035.81 = 3,139.70 : x
  2. Step 2: Convert to fraction form
    12,023.19/18,035.81 = 3,139.70/x
  3. Step 3: Cross multiply
    12,023.19x = 18,035.81 × 3,139.70
  4. Step 4: Simplify right side
    12,023.19x = 56,627,085.60
  5. Step 5: Solve for x
    x = 56,627,085.60/12,023.19
  6. Step 6: Final answer
    x = 4,709.82

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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.