Home / 20,124,136.80-30,186,205.20-6,660,964.80

Finding the Fourth Proportional to 20,124,136.80, 30,186,205.20 and 6,660,964.80

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Solution

The fourth proportional to 20,124,136.80, 30,186,205.20 and 6,660,964.80 is: 9,991,447.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,124,136.80 : 30,186,205.20 = 6,660,964.80 : x
  2. Step 2: Convert to fraction form
    20,124,136.80/30,186,205.20 = 6,660,964.80/x
  3. Step 3: Cross multiply
    20,124,136.80x = 30,186,205.20 × 6,660,964.80
  4. Step 4: Simplify right side
    20,124,136.80x = 201,069,250,282,776.94
  5. Step 5: Solve for x
    x = 201,069,250,282,776.94/20,124,136.80
  6. Step 6: Final answer
    x = 9,991,447.20

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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.