Home / 28,630.49-39,509.91-15,883.54

Finding the Fourth Proportional to 28,630.49, 39,509.91 and 15,883.54

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Solution

The fourth proportional to 28,630.49, 39,509.91 and 15,883.54 is: 21,919.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,630.49 : 39,509.91 = 15,883.54 : x
  2. Step 2: Convert to fraction form
    28,630.49/39,509.91 = 15,883.54/x
  3. Step 3: Cross multiply
    28,630.49x = 39,509.91 × 15,883.54
  4. Step 4: Simplify right side
    28,630.49x = 627,557,359.35
  5. Step 5: Solve for x
    x = 627,557,359.35/28,630.49
  6. Step 6: Final answer
    x = 21,919.20

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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.