Home / 11,930.77-17,899.39-4,140.19

Finding the Fourth Proportional to 11,930.77, 17,899.39 and 4,140.19

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Solution

The fourth proportional to 11,930.77, 17,899.39 and 4,140.19 is: 6,211.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,930.77 : 17,899.39 = 4,140.19 : x
  2. Step 2: Convert to fraction form
    11,930.77/17,899.39 = 4,140.19/x
  3. Step 3: Cross multiply
    11,930.77x = 17,899.39 × 4,140.19
  4. Step 4: Simplify right side
    11,930.77x = 74,106,785.99
  5. Step 5: Solve for x
    x = 74,106,785.99/11,930.77
  6. Step 6: Final answer
    x = 6,211.40

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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.