Home / 21,103.38-29,111.97-19,602.54

Finding the Fourth Proportional to 21,103.38, 29,111.97 and 19,602.54

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Solution

The fourth proportional to 21,103.38, 29,111.97 and 19,602.54 is: 27,041.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,103.38 : 29,111.97 = 19,602.54 : x
  2. Step 2: Convert to fraction form
    21,103.38/29,111.97 = 19,602.54/x
  3. Step 3: Cross multiply
    21,103.38x = 29,111.97 × 19,602.54
  4. Step 4: Simplify right side
    21,103.38x = 570,668,556.40
  5. Step 5: Solve for x
    x = 570,668,556.40/21,103.38
  6. Step 6: Final answer
    x = 27,041.57

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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.