Home / 28,464.12-39,279.06-15,886.44

Finding the Fourth Proportional to 28,464.12, 39,279.06 and 15,886.44

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Solution

The fourth proportional to 28,464.12, 39,279.06 and 15,886.44 is: 21,922.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,464.12 : 39,279.06 = 15,886.44 : x
  2. Step 2: Convert to fraction form
    28,464.12/39,279.06 = 15,886.44/x
  3. Step 3: Cross multiply
    28,464.12x = 39,279.06 × 15,886.44
  4. Step 4: Simplify right side
    28,464.12x = 624,004,429.95
  5. Step 5: Solve for x
    x = 624,004,429.95/28,464.12
  6. Step 6: Final answer
    x = 21,922.49

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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.