Home / 13,121.52-19,665.48-7,198.32

Finding the Fourth Proportional to 13,121.52, 19,665.48 and 7,198.32

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Solution

The fourth proportional to 13,121.52, 19,665.48 and 7,198.32 is: 10,788.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,121.52 : 19,665.48 = 7,198.32 : x
  2. Step 2: Convert to fraction form
    13,121.52/19,665.48 = 7,198.32/x
  3. Step 3: Cross multiply
    13,121.52x = 19,665.48 × 7,198.32
  4. Step 4: Simplify right side
    13,121.52x = 141,558,417.99
  5. Step 5: Solve for x
    x = 141,558,417.99/13,121.52
  6. Step 6: Final answer
    x = 10,788.26

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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.