Home / 21,993,778.40-32,990,667.60-11,790,111.20

Finding the Fourth Proportional to 21,993,778.40, 32,990,667.60 and 11,790,111.20

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Solution

The fourth proportional to 21,993,778.40, 32,990,667.60 and 11,790,111.20 is: 17,685,166.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,993,778.40 : 32,990,667.60 = 11,790,111.20 : x
  2. Step 2: Convert to fraction form
    21,993,778.40/32,990,667.60 = 11,790,111.20/x
  3. Step 3: Cross multiply
    21,993,778.40x = 32,990,667.60 × 11,790,111.20
  4. Step 4: Simplify right side
    21,993,778.40x = 388,963,639,566,237.12
  5. Step 5: Solve for x
    x = 388,963,639,566,237.12/21,993,778.40
  6. Step 6: Final answer
    x = 17,685,166.80

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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.