Home / 18,686,912.20-28,030,368.30-7,900,628.20

Finding the Fourth Proportional to 18,686,912.20, 28,030,368.30 and 7,900,628.20

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Solution

The fourth proportional to 18,686,912.20, 28,030,368.30 and 7,900,628.20 is: 11,850,942.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,686,912.20 : 28,030,368.30 = 7,900,628.20 : x
  2. Step 2: Convert to fraction form
    18,686,912.20/28,030,368.30 = 7,900,628.20/x
  3. Step 3: Cross multiply
    18,686,912.20x = 28,030,368.30 × 7,900,628.20
  4. Step 4: Simplify right side
    18,686,912.20x = 221,457,518,247,366.06
  5. Step 5: Solve for x
    x = 221,457,518,247,366.06/18,686,912.20
  6. Step 6: Final answer
    x = 11,850,942.30

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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.