Home / 12,190.03-18,285.67-3,870.70

Finding the Fourth Proportional to 12,190.03, 18,285.67 and 3,870.70

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Solution

The fourth proportional to 12,190.03, 18,285.67 and 3,870.70 is: 5,806.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,190.03 : 18,285.67 = 3,870.70 : x
  2. Step 2: Convert to fraction form
    12,190.03/18,285.67 = 3,870.70/x
  3. Step 3: Cross multiply
    12,190.03x = 18,285.67 × 3,870.70
  4. Step 4: Simplify right side
    12,190.03x = 70,778,261.12
  5. Step 5: Solve for x
    x = 70,778,261.12/12,190.03
  6. Step 6: Final answer
    x = 5,806.24

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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.