Home / 18,702,078.90-28,005,879.15-12,277,547.70

Finding the Fourth Proportional to 18,702,078.90, 28,005,879.15 and 12,277,547.70

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Solution

The fourth proportional to 18,702,078.90, 28,005,879.15 and 12,277,547.70 is: 18,385,309.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,702,078.90 : 28,005,879.15 = 12,277,547.70 : x
  2. Step 2: Convert to fraction form
    18,702,078.90/28,005,879.15 = 12,277,547.70/x
  3. Step 3: Cross multiply
    18,702,078.90x = 28,005,879.15 × 12,277,547.70
  4. Step 4: Simplify right side
    18,702,078.90x = 343,843,517,144,560.44
  5. Step 5: Solve for x
    x = 343,843,517,144,560.44/18,702,078.90
  6. Step 6: Final answer
    x = 18,385,309.94

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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.