Home / 30,480.32-45,723.52-12,008

Finding the Fourth Proportional to 30,480.32, 45,723.52 and 12,008

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Solution

The fourth proportional to 30,480.32, 45,723.52 and 12,008 is: 18,013.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,480.32 : 45,723.52 = 12,008 : x
  2. Step 2: Convert to fraction form
    30,480.32/45,723.52 = 12,008/x
  3. Step 3: Cross multiply
    30,480.32x = 45,723.52 × 12,008
  4. Step 4: Simplify right side
    30,480.32x = 549,048,028.16
  5. Step 5: Solve for x
    x = 549,048,028.16/30,480.32
  6. Step 6: Final answer
    x = 18,013.20

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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.