Home / 28,512.63-39,346.61-15,765.59

Finding the Fourth Proportional to 28,512.63, 39,346.61 and 15,765.59

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Solution

The fourth proportional to 28,512.63, 39,346.61 and 15,765.59 is: 21,756.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,512.63 : 39,346.61 = 15,765.59 : x
  2. Step 2: Convert to fraction form
    28,512.63/39,346.61 = 15,765.59/x
  3. Step 3: Cross multiply
    28,512.63x = 39,346.61 × 15,765.59
  4. Step 4: Simplify right side
    28,512.63x = 620,322,245.59
  5. Step 5: Solve for x
    x = 620,322,245.59/28,512.63
  6. Step 6: Final answer
    x = 21,756.06

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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.