Home / 12,155.36-18,220.92-5,137.14

Finding the Fourth Proportional to 12,155.36, 18,220.92 and 5,137.14

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Solution

The fourth proportional to 12,155.36, 18,220.92 and 5,137.14 is: 7,700.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,155.36 : 18,220.92 = 5,137.14 : x
  2. Step 2: Convert to fraction form
    12,155.36/18,220.92 = 5,137.14/x
  3. Step 3: Cross multiply
    12,155.36x = 18,220.92 × 5,137.14
  4. Step 4: Simplify right side
    12,155.36x = 93,603,325.86
  5. Step 5: Solve for x
    x = 93,603,325.86/12,155.36
  6. Step 6: Final answer
    x = 7,700.58

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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.