Home / 28,550,680.80-39,400,634.16-15,498,474.72

Finding the Fourth Proportional to 28,550,680.80, 39,400,634.16 and 15,498,474.72

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Solution

The fourth proportional to 28,550,680.80, 39,400,634.16 and 15,498,474.72 is: 21,388,272.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,550,680.80 : 39,400,634.16 = 15,498,474.72 : x
  2. Step 2: Convert to fraction form
    28,550,680.80/39,400,634.16 = 15,498,474.72/x
  3. Step 3: Cross multiply
    28,550,680.80x = 39,400,634.16 × 15,498,474.72
  4. Step 4: Simplify right side
    28,550,680.80x = 610,649,732,480,728.38
  5. Step 5: Solve for x
    x = 610,649,732,480,728.38/28,550,680.80
  6. Step 6: Final answer
    x = 21,388,272.20

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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.