Home / 28,435.44-39,256.95-18,891.69

Finding the Fourth Proportional to 28,435.44, 39,256.95 and 18,891.69

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Solution

The fourth proportional to 28,435.44, 39,256.95 and 18,891.69 is: 26,081.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,435.44 : 39,256.95 = 18,891.69 : x
  2. Step 2: Convert to fraction form
    28,435.44/39,256.95 = 18,891.69/x
  3. Step 3: Cross multiply
    28,435.44x = 39,256.95 × 18,891.69
  4. Step 4: Simplify right side
    28,435.44x = 741,630,129.75
  5. Step 5: Solve for x
    x = 741,630,129.75/28,435.44
  6. Step 6: Final answer
    x = 26,081.19

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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.