Home / 19,321.09-26,684.15-15,556.72

Finding the Fourth Proportional to 19,321.09, 26,684.15 and 15,556.72

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Solution

The fourth proportional to 19,321.09, 26,684.15 and 15,556.72 is: 21,485.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,321.09 : 26,684.15 = 15,556.72 : x
  2. Step 2: Convert to fraction form
    19,321.09/26,684.15 = 15,556.72/x
  3. Step 3: Cross multiply
    19,321.09x = 26,684.15 × 15,556.72
  4. Step 4: Simplify right side
    19,321.09x = 415,117,849.99
  5. Step 5: Solve for x
    x = 415,117,849.99/19,321.09
  6. Step 6: Final answer
    x = 21,485.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.