Home / 12,768,045.20-19,152,067.80-7,990,470.80

Finding the Fourth Proportional to 12,768,045.20, 19,152,067.80 and 7,990,470.80

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Solution

The fourth proportional to 12,768,045.20, 19,152,067.80 and 7,990,470.80 is: 11,985,706.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,768,045.20 : 19,152,067.80 = 7,990,470.80 : x
  2. Step 2: Convert to fraction form
    12,768,045.20/19,152,067.80 = 7,990,470.80/x
  3. Step 3: Cross multiply
    12,768,045.20x = 19,152,067.80 × 7,990,470.80
  4. Step 4: Simplify right side
    12,768,045.20x = 153,034,038,515,520.25
  5. Step 5: Solve for x
    x = 153,034,038,515,520.25/12,768,045.20
  6. Step 6: Final answer
    x = 11,985,706.20

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1.5x scale

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.