Home / 28,913.19-39,906.89-18,824.09

Finding the Fourth Proportional to 28,913.19, 39,906.89 and 18,824.09

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Solution

The fourth proportional to 28,913.19, 39,906.89 and 18,824.09 is: 25,981.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,913.19 : 39,906.89 = 18,824.09 : x
  2. Step 2: Convert to fraction form
    28,913.19/39,906.89 = 18,824.09/x
  3. Step 3: Cross multiply
    28,913.19x = 39,906.89 × 18,824.09
  4. Step 4: Simplify right side
    28,913.19x = 751,210,595.33
  5. Step 5: Solve for x
    x = 751,210,595.33/28,913.19
  6. Step 6: Final answer
    x = 25,981.59

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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.