Home / 39,006.83-53,829.45-21,101.78

Finding the Fourth Proportional to 39,006.83, 53,829.45 and 21,101.78

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Solution

The fourth proportional to 39,006.83, 53,829.45 and 21,101.78 is: 29,120.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,006.83 : 53,829.45 = 21,101.78 : x
  2. Step 2: Convert to fraction form
    39,006.83/53,829.45 = 21,101.78/x
  3. Step 3: Cross multiply
    39,006.83x = 53,829.45 × 21,101.78
  4. Step 4: Simplify right side
    39,006.83x = 1,135,897,211.42
  5. Step 5: Solve for x
    x = 1,135,897,211.42/39,006.83
  6. Step 6: Final answer
    x = 29,120.47

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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.