Home / 18,702,918.90-28,054,378.35-12,320,378.10

Finding the Fourth Proportional to 18,702,918.90, 28,054,378.35 and 12,320,378.10

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Solution

The fourth proportional to 18,702,918.90, 28,054,378.35 and 12,320,378.10 is: 18,480,567.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,702,918.90 : 28,054,378.35 = 12,320,378.10 : x
  2. Step 2: Convert to fraction form
    18,702,918.90/28,054,378.35 = 12,320,378.10/x
  3. Step 3: Cross multiply
    18,702,918.90x = 28,054,378.35 × 12,320,378.10
  4. Step 4: Simplify right side
    18,702,918.90x = 345,640,548,632,454.12
  5. Step 5: Solve for x
    x = 345,640,548,632,454.12/18,702,918.90
  6. Step 6: Final answer
    x = 18,480,567.15

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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.