Home / 28,370.14-39,149.26-15,620.84

Finding the Fourth Proportional to 28,370.14, 39,149.26 and 15,620.84

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Solution

The fourth proportional to 28,370.14, 39,149.26 and 15,620.84 is: 21,555.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,370.14 : 39,149.26 = 15,620.84 : x
  2. Step 2: Convert to fraction form
    28,370.14/39,149.26 = 15,620.84/x
  3. Step 3: Cross multiply
    28,370.14x = 39,149.26 × 15,620.84
  4. Step 4: Simplify right side
    28,370.14x = 611,544,326.58
  5. Step 5: Solve for x
    x = 611,544,326.58/28,370.14
  6. Step 6: Final answer
    x = 21,555.92

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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.