Home / 20,199,383.80-30,299,075.70-19,880,519.20

Finding the Fourth Proportional to 20,199,383.80, 30,299,075.70 and 19,880,519.20

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Solution

The fourth proportional to 20,199,383.80, 30,299,075.70 and 19,880,519.20 is: 29,820,778.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,199,383.80 : 30,299,075.70 = 19,880,519.20 : x
  2. Step 2: Convert to fraction form
    20,199,383.80/30,299,075.70 = 19,880,519.20/x
  3. Step 3: Cross multiply
    20,199,383.80x = 30,299,075.70 × 19,880,519.20
  4. Step 4: Simplify right side
    20,199,383.80x = 602,361,356,196,103.38
  5. Step 5: Solve for x
    x = 602,361,356,196,103.38/20,199,383.80
  6. Step 6: Final answer
    x = 29,820,778.80

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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.