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Finding the Fourth Proportional to 13,630,060.80, 20,427,724.80 and 7,243,372.80

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Solution

The fourth proportional to 13,630,060.80, 20,427,724.80 and 7,243,372.80 is: 10,855,830.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,630,060.80 : 20,427,724.80 = 7,243,372.80 : x
  2. Step 2: Convert to fraction form
    13,630,060.80/20,427,724.80 = 7,243,372.80/x
  3. Step 3: Cross multiply
    13,630,060.80x = 20,427,724.80 × 7,243,372.80
  4. Step 4: Simplify right side
    13,630,060.80x = 147,965,626,182,205.44
  5. Step 5: Solve for x
    x = 147,965,626,182,205.44/13,630,060.80
  6. Step 6: Final answer
    x = 10,855,830.24

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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.