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Finding the Fourth Proportional to 21,102,021.90, 29,610,015.30 and 21,102,021.90

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Solution

The fourth proportional to 21,102,021.90, 29,610,015.30 and 21,102,021.90 is: 29,610,015.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,102,021.90 : 29,610,015.30 = 21,102,021.90 : x
  2. Step 2: Convert to fraction form
    21,102,021.90/29,610,015.30 = 21,102,021.90/x
  3. Step 3: Cross multiply
    21,102,021.90x = 29,610,015.30 × 21,102,021.90
  4. Step 4: Simplify right side
    21,102,021.90x = 624,831,191,319,935
  5. Step 5: Solve for x
    x = 624,831,191,319,935/21,102,021.90
  6. Step 6: Final answer
    x = 29,610,015.30

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.