Home / 8,271,143.20-12,378,721.20-7,263,373.60

Finding the Fourth Proportional to 8,271,143.20, 12,378,721.20 and 7,263,373.60

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Solution

The fourth proportional to 8,271,143.20, 12,378,721.20 and 7,263,373.60 is: 10,870,477.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,271,143.20 : 12,378,721.20 = 7,263,373.60 : x
  2. Step 2: Convert to fraction form
    8,271,143.20/12,378,721.20 = 7,263,373.60/x
  3. Step 3: Cross multiply
    8,271,143.20x = 12,378,721.20 × 7,263,373.60
  4. Step 4: Simplify right side
    8,271,143.20x = 89,911,276,765,840.31
  5. Step 5: Solve for x
    x = 89,911,276,765,840.31/8,271,143.20
  6. Step 6: Final answer
    x = 10,870,477.59

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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.