Home / 39,867.07-55,016.60-21,962.09

Finding the Fourth Proportional to 39,867.07, 55,016.60 and 21,962.09

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Solution

The fourth proportional to 39,867.07, 55,016.60 and 21,962.09 is: 30,307.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,867.07 : 55,016.60 = 21,962.09 : x
  2. Step 2: Convert to fraction form
    39,867.07/55,016.60 = 21,962.09/x
  3. Step 3: Cross multiply
    39,867.07x = 55,016.60 × 21,962.09
  4. Step 4: Simplify right side
    39,867.07x = 1,208,279,135.80
  5. Step 5: Solve for x
    x = 1,208,279,135.80/39,867.07
  6. Step 6: Final answer
    x = 30,307.70

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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.