Home / 30,651.66-45,975.06-13,121.64

Finding the Fourth Proportional to 30,651.66, 45,975.06 and 13,121.64

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Solution

The fourth proportional to 30,651.66, 45,975.06 and 13,121.64 is: 19,681.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,651.66 : 45,975.06 = 13,121.64 : x
  2. Step 2: Convert to fraction form
    30,651.66/45,975.06 = 13,121.64/x
  3. Step 3: Cross multiply
    30,651.66x = 45,975.06 × 13,121.64
  4. Step 4: Simplify right side
    30,651.66x = 603,268,186.30
  5. Step 5: Solve for x
    x = 603,268,186.30/30,651.66
  6. Step 6: Final answer
    x = 19,681.42

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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.