Home / 18,191,930,479.20-27,287,895,718.80-12,865,616,200.80

Finding the Fourth Proportional to 18,191,930,479.20, 27,287,895,718.80 and 12,865,616,200.80

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Solution

The fourth proportional to 18,191,930,479.20, 27,287,895,718.80 and 12,865,616,200.80 is: 19,298,424,301.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,191,930,479.20 : 27,287,895,718.80 = 12,865,616,200.80 : x
  2. Step 2: Convert to fraction form
    18,191,930,479.20/27,287,895,718.80 = 12,865,616,200.80/x
  3. Step 3: Cross multiply
    18,191,930,479.20x = 27,287,895,718.80 × 12,865,616,200.80
  4. Step 4: Simplify right side
    18,191,930,479.20x = 351,075,593,245,534,191,616
  5. Step 5: Solve for x
    x = 351,075,593,245,534,191,616/18,191,930,479.20
  6. Step 6: Final answer
    x = 19,298,424,301.20

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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.