Home / 20,876,880.20-31,305,075.06-8,578,615.60

Finding the Fourth Proportional to 20,876,880.20, 31,305,075.06 and 8,578,615.60

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Solution

The fourth proportional to 20,876,880.20, 31,305,075.06 and 8,578,615.60 is: 12,863,713.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,876,880.20 : 31,305,075.06 = 8,578,615.60 : x
  2. Step 2: Convert to fraction form
    20,876,880.20/31,305,075.06 = 8,578,615.60/x
  3. Step 3: Cross multiply
    20,876,880.20x = 31,305,075.06 × 8,578,615.60
  4. Step 4: Simplify right side
    20,876,880.20x = 268,554,205,268,886.91
  5. Step 5: Solve for x
    x = 268,554,205,268,886.91/20,876,880.20
  6. Step 6: Final answer
    x = 12,863,713.48

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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.