Home / 28,392.97-39,191.48-18,313.63

Finding the Fourth Proportional to 28,392.97, 39,191.48 and 18,313.63

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Solution

The fourth proportional to 28,392.97, 39,191.48 and 18,313.63 is: 25,278.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,392.97 : 39,191.48 = 18,313.63 : x
  2. Step 2: Convert to fraction form
    28,392.97/39,191.48 = 18,313.63/x
  3. Step 3: Cross multiply
    28,392.97x = 39,191.48 × 18,313.63
  4. Step 4: Simplify right side
    28,392.97x = 717,738,074.33
  5. Step 5: Solve for x
    x = 717,738,074.33/28,392.97
  6. Step 6: Final answer
    x = 25,278.73

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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.