Home / 13,930.82-20,907.90-13,055.08

Finding the Fourth Proportional to 13,930.82, 20,907.90 and 13,055.08

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Solution

The fourth proportional to 13,930.82, 20,907.90 and 13,055.08 is: 19,593.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,930.82 : 20,907.90 = 13,055.08 : x
  2. Step 2: Convert to fraction form
    13,930.82/20,907.90 = 13,055.08/x
  3. Step 3: Cross multiply
    13,930.82x = 20,907.90 × 13,055.08
  4. Step 4: Simplify right side
    13,930.82x = 272,954,307.13
  5. Step 5: Solve for x
    x = 272,954,307.13/13,930.82
  6. Step 6: Final answer
    x = 19,593.56

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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.