Home / 28,579.87-39,436.47-16,480.79

Finding the Fourth Proportional to 28,579.87, 39,436.47 and 16,480.79

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Solution

The fourth proportional to 28,579.87, 39,436.47 and 16,480.79 is: 22,741.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,579.87 : 39,436.47 = 16,480.79 : x
  2. Step 2: Convert to fraction form
    28,579.87/39,436.47 = 16,480.79/x
  3. Step 3: Cross multiply
    28,579.87x = 39,436.47 × 16,480.79
  4. Step 4: Simplify right side
    28,579.87x = 649,944,279.00
  5. Step 5: Solve for x
    x = 649,944,279.00/28,579.87
  6. Step 6: Final answer
    x = 22,741.33

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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.