Home / 12,513,643.20-18,770,464.80-3,994,257.60

Finding the Fourth Proportional to 12,513,643.20, 18,770,464.80 and 3,994,257.60

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Solution

The fourth proportional to 12,513,643.20, 18,770,464.80 and 3,994,257.60 is: 5,991,386.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,513,643.20 : 18,770,464.80 = 3,994,257.60 : x
  2. Step 2: Convert to fraction form
    12,513,643.20/18,770,464.80 = 3,994,257.60/x
  3. Step 3: Cross multiply
    12,513,643.20x = 18,770,464.80 × 3,994,257.60
  4. Step 4: Simplify right side
    12,513,643.20x = 74,974,071,682,932.48
  5. Step 5: Solve for x
    x = 74,974,071,682,932.48/12,513,643.20
  6. Step 6: Final answer
    x = 5,991,386.40

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Double scale
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Similar ratio
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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.