Home / 18,702,913.90-28,054,370.85-12,320,373.10

Finding the Fourth Proportional to 18,702,913.90, 28,054,370.85 and 12,320,373.10

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Solution

The fourth proportional to 18,702,913.90, 28,054,370.85 and 12,320,373.10 is: 18,480,559.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,702,913.90 : 28,054,370.85 = 12,320,373.10 : x
  2. Step 2: Convert to fraction form
    18,702,913.90/28,054,370.85 = 12,320,373.10/x
  3. Step 3: Cross multiply
    18,702,913.90x = 28,054,370.85 × 12,320,373.10
  4. Step 4: Simplify right side
    18,702,913.90x = 345,640,315,957,764.12
  5. Step 5: Solve for x
    x = 345,640,315,957,764.12/18,702,913.90
  6. Step 6: Final answer
    x = 18,480,559.65

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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.