Home / 20,993,142.30-28,969,497.54-11,701,477.68

Finding the Fourth Proportional to 20,993,142.30, 28,969,497.54 and 11,701,477.68

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Solution

The fourth proportional to 20,993,142.30, 28,969,497.54 and 11,701,477.68 is: 16,147,460.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,993,142.30 : 28,969,497.54 = 11,701,477.68 : x
  2. Step 2: Convert to fraction form
    20,993,142.30/28,969,497.54 = 11,701,477.68/x
  3. Step 3: Cross multiply
    20,993,142.30x = 28,969,497.54 × 11,701,477.68
  4. Step 4: Simplify right side
    20,993,142.30x = 338,985,928,865,124.88
  5. Step 5: Solve for x
    x = 338,985,928,865,124.88/20,993,142.30
  6. Step 6: Final answer
    x = 16,147,460.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.