Home / 28,842.05-39,802.03-15,921.33

Finding the Fourth Proportional to 28,842.05, 39,802.03 and 15,921.33

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Solution

The fourth proportional to 28,842.05, 39,802.03 and 15,921.33 is: 21,971.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,842.05 : 39,802.03 = 15,921.33 : x
  2. Step 2: Convert to fraction form
    28,842.05/39,802.03 = 15,921.33/x
  3. Step 3: Cross multiply
    28,842.05x = 39,802.03 × 15,921.33
  4. Step 4: Simplify right side
    28,842.05x = 633,701,393.61
  5. Step 5: Solve for x
    x = 633,701,393.61/28,842.05
  6. Step 6: Final answer
    x = 21,971.44

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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.