Home / 21,036,652.20-31,554,978.30-20,186,346.60

Finding the Fourth Proportional to 21,036,652.20, 31,554,978.30 and 20,186,346.60

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Solution

The fourth proportional to 21,036,652.20, 31,554,978.30 and 20,186,346.60 is: 30,279,519.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,036,652.20 : 31,554,978.30 = 20,186,346.60 : x
  2. Step 2: Convert to fraction form
    21,036,652.20/31,554,978.30 = 20,186,346.60/x
  3. Step 3: Cross multiply
    21,036,652.20x = 31,554,978.30 × 20,186,346.60
  4. Step 4: Simplify right side
    21,036,652.20x = 636,979,728,919,278.88
  5. Step 5: Solve for x
    x = 636,979,728,919,278.88/21,036,652.20
  6. Step 6: Final answer
    x = 30,279,519.90

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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.