Home / 28,161.39-38,866.26-18,478.99

Finding the Fourth Proportional to 28,161.39, 38,866.26 and 18,478.99

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Solution

The fourth proportional to 28,161.39, 38,866.26 and 18,478.99 is: 25,503.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,161.39 : 38,866.26 = 18,478.99 : x
  2. Step 2: Convert to fraction form
    28,161.39/38,866.26 = 18,478.99/x
  3. Step 3: Cross multiply
    28,161.39x = 38,866.26 × 18,478.99
  4. Step 4: Simplify right side
    28,161.39x = 718,209,229.88
  5. Step 5: Solve for x
    x = 718,209,229.88/28,161.39
  6. Step 6: Final answer
    x = 25,503.33

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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.