Home / 19,152,638.80-28,728,958.20-11,972,280.40

Finding the Fourth Proportional to 19,152,638.80, 28,728,958.20 and 11,972,280.40

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Solution

The fourth proportional to 19,152,638.80, 28,728,958.20 and 11,972,280.40 is: 17,958,420.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,152,638.80 : 28,728,958.20 = 11,972,280.40 : x
  2. Step 2: Convert to fraction form
    19,152,638.80/28,728,958.20 = 11,972,280.40/x
  3. Step 3: Cross multiply
    19,152,638.80x = 28,728,958.20 × 11,972,280.40
  4. Step 4: Simplify right side
    19,152,638.80x = 343,951,143,170,279.31
  5. Step 5: Solve for x
    x = 343,951,143,170,279.31/19,152,638.80
  6. Step 6: Final answer
    x = 17,958,420.60

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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.