Home / 30,079.08-45,118.44-12,305.97

Finding the Fourth Proportional to 30,079.08, 45,118.44 and 12,305.97

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Solution

The fourth proportional to 30,079.08, 45,118.44 and 12,305.97 is: 18,458.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,079.08 : 45,118.44 = 12,305.97 : x
  2. Step 2: Convert to fraction form
    30,079.08/45,118.44 = 12,305.97/x
  3. Step 3: Cross multiply
    30,079.08x = 45,118.44 × 12,305.97
  4. Step 4: Simplify right side
    30,079.08x = 555,226,169.09
  5. Step 5: Solve for x
    x = 555,226,169.09/30,079.08
  6. Step 6: Final answer
    x = 18,458.88

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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.