Home / 28,431,030.90-42,646,546.35-18,857,219.70

Finding the Fourth Proportional to 28,431,030.90, 42,646,546.35 and 18,857,219.70

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Solution

The fourth proportional to 28,431,030.90, 42,646,546.35 and 18,857,219.70 is: 28,285,829.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,431,030.90 : 42,646,546.35 = 18,857,219.70 : x
  2. Step 2: Convert to fraction form
    28,431,030.90/42,646,546.35 = 18,857,219.70/x
  3. Step 3: Cross multiply
    28,431,030.90x = 42,646,546.35 × 18,857,219.70
  4. Step 4: Simplify right side
    28,431,030.90x = 804,195,293,968,183.12
  5. Step 5: Solve for x
    x = 804,195,293,968,183.12/28,431,030.90
  6. Step 6: Final answer
    x = 28,285,829.55

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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.