Home / 39,009.78-53,833.35-21,104.73

Finding the Fourth Proportional to 39,009.78, 53,833.35 and 21,104.73

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Solution

The fourth proportional to 39,009.78, 53,833.35 and 21,104.73 is: 29,124.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,009.78 : 53,833.35 = 21,104.73 : x
  2. Step 2: Convert to fraction form
    39,009.78/53,833.35 = 21,104.73/x
  3. Step 3: Cross multiply
    39,009.78x = 53,833.35 × 21,104.73
  4. Step 4: Simplify right side
    39,009.78x = 1,136,138,316.75
  5. Step 5: Solve for x
    x = 1,136,138,316.75/39,009.78
  6. Step 6: Final answer
    x = 29,124.45

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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.