Home / 30,979.83-46,443.62-13,436.45

Finding the Fourth Proportional to 30,979.83, 46,443.62 and 13,436.45

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Solution

The fourth proportional to 30,979.83, 46,443.62 and 13,436.45 is: 20,143.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,979.83 : 46,443.62 = 13,436.45 : x
  2. Step 2: Convert to fraction form
    30,979.83/46,443.62 = 13,436.45/x
  3. Step 3: Cross multiply
    30,979.83x = 46,443.62 × 13,436.45
  4. Step 4: Simplify right side
    30,979.83x = 624,037,145.73
  5. Step 5: Solve for x
    x = 624,037,145.73/30,979.83
  6. Step 6: Final answer
    x = 20,143.34

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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.