Home / 11,930.51-17,895.77-4,139.39

Finding the Fourth Proportional to 11,930.51, 17,895.77 and 4,139.39

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Solution

The fourth proportional to 11,930.51, 17,895.77 and 4,139.39 is: 6,209.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,930.51 : 17,895.77 = 4,139.39 : x
  2. Step 2: Convert to fraction form
    11,930.51/17,895.77 = 4,139.39/x
  3. Step 3: Cross multiply
    11,930.51x = 17,895.77 × 4,139.39
  4. Step 4: Simplify right side
    11,930.51x = 74,077,461.20
  5. Step 5: Solve for x
    x = 74,077,461.20/11,930.51
  6. Step 6: Final answer
    x = 6,209.08

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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.