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Finding the Fourth Proportional to 19,322,712.80, 28,984,069.20 and 18,493,402.40

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Solution

The fourth proportional to 19,322,712.80, 28,984,069.20 and 18,493,402.40 is: 27,740,103.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,322,712.80 : 28,984,069.20 = 18,493,402.40 : x
  2. Step 2: Convert to fraction form
    19,322,712.80/28,984,069.20 = 18,493,402.40/x
  3. Step 3: Cross multiply
    19,322,712.80x = 28,984,069.20 × 18,493,402.40
  4. Step 4: Simplify right side
    19,322,712.80x = 536,014,054,905,046
  5. Step 5: Solve for x
    x = 536,014,054,905,046/19,322,712.80
  6. Step 6: Final answer
    x = 27,740,103.60

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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.