Home / 12,258,048.20-18,359,078.70-7,219,200.20

Finding the Fourth Proportional to 12,258,048.20, 18,359,078.70 and 7,219,200.20

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Solution

The fourth proportional to 12,258,048.20, 18,359,078.70 and 7,219,200.20 is: 10,812,313.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,258,048.20 : 18,359,078.70 = 7,219,200.20 : x
  2. Step 2: Convert to fraction form
    12,258,048.20/18,359,078.70 = 7,219,200.20/x
  3. Step 3: Cross multiply
    12,258,048.20x = 18,359,078.70 × 7,219,200.20
  4. Step 4: Simplify right side
    12,258,048.20x = 132,537,864,622,855.73
  5. Step 5: Solve for x
    x = 132,537,864,622,855.73/12,258,048.20
  6. Step 6: Final answer
    x = 10,812,313.87

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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.