Home / 39,877.51-55,027.05-21,971.92

Finding the Fourth Proportional to 39,877.51, 55,027.05 and 21,971.92

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Solution

The fourth proportional to 39,877.51, 55,027.05 and 21,971.92 is: 30,319.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,877.51 : 55,027.05 = 21,971.92 : x
  2. Step 2: Convert to fraction form
    39,877.51/55,027.05 = 21,971.92/x
  3. Step 3: Cross multiply
    39,877.51x = 55,027.05 × 21,971.92
  4. Step 4: Simplify right side
    39,877.51x = 1,209,049,940.44
  5. Step 5: Solve for x
    x = 1,209,049,940.44/39,877.51
  6. Step 6: Final answer
    x = 30,319.09

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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.