Home / 30,979.80-46,443.58-13,436.42

Finding the Fourth Proportional to 30,979.80, 46,443.58 and 13,436.42

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Solution

The fourth proportional to 30,979.80, 46,443.58 and 13,436.42 is: 20,143.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,979.80 : 46,443.58 = 13,436.42 : x
  2. Step 2: Convert to fraction form
    30,979.80/46,443.58 = 13,436.42/x
  3. Step 3: Cross multiply
    30,979.80x = 46,443.58 × 13,436.42
  4. Step 4: Simplify right side
    30,979.80x = 624,035,181.37
  5. Step 5: Solve for x
    x = 624,035,181.37/30,979.80
  6. Step 6: Final answer
    x = 20,143.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.