Home / 30,661.13-45,974.39-10,661.42

Finding the Fourth Proportional to 30,661.13, 45,974.39 and 10,661.42

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Solution

The fourth proportional to 30,661.13, 45,974.39 and 10,661.42 is: 15,986.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,661.13 : 45,974.39 = 10,661.42 : x
  2. Step 2: Convert to fraction form
    30,661.13/45,974.39 = 10,661.42/x
  3. Step 3: Cross multiply
    30,661.13x = 45,974.39 × 10,661.42
  4. Step 4: Simplify right side
    30,661.13x = 490,152,342.66
  5. Step 5: Solve for x
    x = 490,152,342.66/30,661.13
  6. Step 6: Final answer
    x = 15,986.11

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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.