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Finding the Fourth Proportional to 17,978,512.01, 24,808,495.12 and 13,271,411.72

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Solution

The fourth proportional to 17,978,512.01, 24,808,495.12 and 13,271,411.72 is: 18,313,181.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,978,512.01 : 24,808,495.12 = 13,271,411.72 : x
  2. Step 2: Convert to fraction form
    17,978,512.01/24,808,495.12 = 13,271,411.72/x
  3. Step 3: Cross multiply
    17,978,512.01x = 24,808,495.12 × 13,271,411.72
  4. Step 4: Simplify right side
    17,978,512.01x = 329,243,752,919,973.50
  5. Step 5: Solve for x
    x = 329,243,752,919,973.50/17,978,512.01
  6. Step 6: Final answer
    x = 18,313,181.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.