Home / 30,760.38-46,147.01-12,991.10

Finding the Fourth Proportional to 30,760.38, 46,147.01 and 12,991.10

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Solution

The fourth proportional to 30,760.38, 46,147.01 and 12,991.10 is: 19,489.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,760.38 : 46,147.01 = 12,991.10 : x
  2. Step 2: Convert to fraction form
    30,760.38/46,147.01 = 12,991.10/x
  3. Step 3: Cross multiply
    30,760.38x = 46,147.01 × 12,991.10
  4. Step 4: Simplify right side
    30,760.38x = 599,500,125.92
  5. Step 5: Solve for x
    x = 599,500,125.92/30,760.38
  6. Step 6: Final answer
    x = 19,489.36

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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.