Home / 12,768,050.40-19,152,075.60-7,981,144.80

Finding the Fourth Proportional to 12,768,050.40, 19,152,075.60 and 7,981,144.80

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Solution

The fourth proportional to 12,768,050.40, 19,152,075.60 and 7,981,144.80 is: 11,971,717.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,768,050.40 : 19,152,075.60 = 7,981,144.80 : x
  2. Step 2: Convert to fraction form
    12,768,050.40/19,152,075.60 = 7,981,144.80/x
  3. Step 3: Cross multiply
    12,768,050.40x = 19,152,075.60 × 7,981,144.80
  4. Step 4: Simplify right side
    12,768,050.40x = 152,855,488,584,146.88
  5. Step 5: Solve for x
    x = 152,855,488,584,146.88/12,768,050.40
  6. Step 6: Final answer
    x = 11,971,717.20

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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.