Home / 18,722,406.20-28,027,622.10-11,145,471.80

Finding the Fourth Proportional to 18,722,406.20, 28,027,622.10 and 11,145,471.80

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Solution

The fourth proportional to 18,722,406.20, 28,027,622.10 and 11,145,471.80 is: 16,684,878.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,722,406.20 : 28,027,622.10 = 11,145,471.80 : x
  2. Step 2: Convert to fraction form
    18,722,406.20/28,027,622.10 = 11,145,471.80/x
  3. Step 3: Cross multiply
    18,722,406.20x = 28,027,622.10 × 11,145,471.80
  4. Step 4: Simplify right side
    18,722,406.20x = 312,381,071,736,606.81
  5. Step 5: Solve for x
    x = 312,381,071,736,606.81/18,722,406.20
  6. Step 6: Final answer
    x = 16,684,878.45

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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.