Home / 18,702,079.40-28,005,879.90-12,277,548.20

Finding the Fourth Proportional to 18,702,079.40, 28,005,879.90 and 12,277,548.20

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Solution

The fourth proportional to 18,702,079.40, 28,005,879.90 and 12,277,548.20 is: 18,385,310.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,702,079.40 : 28,005,879.90 = 12,277,548.20 : x
  2. Step 2: Convert to fraction form
    18,702,079.40/28,005,879.90 = 12,277,548.20/x
  3. Step 3: Cross multiply
    18,702,079.40x = 28,005,879.90 × 12,277,548.20
  4. Step 4: Simplify right side
    18,702,079.40x = 343,843,540,355,661.12
  5. Step 5: Solve for x
    x = 343,843,540,355,661.12/18,702,079.40
  6. Step 6: Final answer
    x = 18,385,310.69

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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.