Home / 21,036,812.20-31,555,218.30-20,186,506.60

Finding the Fourth Proportional to 21,036,812.20, 31,555,218.30 and 20,186,506.60

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Solution

The fourth proportional to 21,036,812.20, 31,555,218.30 and 20,186,506.60 is: 30,279,759.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,036,812.20 : 31,555,218.30 = 20,186,506.60 : x
  2. Step 2: Convert to fraction form
    21,036,812.20/31,555,218.30 = 20,186,506.60/x
  3. Step 3: Cross multiply
    21,036,812.20x = 31,555,218.30 × 20,186,506.60
  4. Step 4: Simplify right side
    21,036,812.20x = 636,989,622,477,390.88
  5. Step 5: Solve for x
    x = 636,989,622,477,390.88/21,036,812.20
  6. Step 6: Final answer
    x = 30,279,759.90

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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.