Home / 19,789.74-29,699.64-7,321.56

Finding the Fourth Proportional to 19,789.74, 29,699.64 and 7,321.56

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Solution

The fourth proportional to 19,789.74, 29,699.64 and 7,321.56 is: 10,987.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,789.74 : 29,699.64 = 7,321.56 : x
  2. Step 2: Convert to fraction form
    19,789.74/29,699.64 = 7,321.56/x
  3. Step 3: Cross multiply
    19,789.74x = 29,699.64 × 7,321.56
  4. Step 4: Simplify right side
    19,789.74x = 217,447,696.24
  5. Step 5: Solve for x
    x = 217,447,696.24/19,789.74
  6. Step 6: Final answer
    x = 10,987.90

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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.