Home / 28,333,090.80-42,499,636.20-18,129,423.60

Finding the Fourth Proportional to 28,333,090.80, 42,499,636.20 and 18,129,423.60

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Solution

The fourth proportional to 28,333,090.80, 42,499,636.20 and 18,129,423.60 is: 27,194,135.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,333,090.80 : 42,499,636.20 = 18,129,423.60 : x
  2. Step 2: Convert to fraction form
    28,333,090.80/42,499,636.20 = 18,129,423.60/x
  3. Step 3: Cross multiply
    28,333,090.80x = 42,499,636.20 × 18,129,423.60
  4. Step 4: Simplify right side
    28,333,090.80x = 770,493,907,515,694.38
  5. Step 5: Solve for x
    x = 770,493,907,515,694.38/28,333,090.80
  6. Step 6: Final answer
    x = 27,194,135.40

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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.