Home / 28,630.14-39,509.69-15,883.58

Finding the Fourth Proportional to 28,630.14, 39,509.69 and 15,883.58

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Solution

The fourth proportional to 28,630.14, 39,509.69 and 15,883.58 is: 21,919.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,630.14 : 39,509.69 = 15,883.58 : x
  2. Step 2: Convert to fraction form
    28,630.14/39,509.69 = 15,883.58/x
  3. Step 3: Cross multiply
    28,630.14x = 39,509.69 × 15,883.58
  4. Step 4: Simplify right side
    28,630.14x = 627,555,164.05
  5. Step 5: Solve for x
    x = 627,555,164.05/28,630.14
  6. Step 6: Final answer
    x = 21,919.39

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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.