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Finding the Fourth Proportional to 13,210,311.90, 18,456,645.30 and 13,210,311.90

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Solution

The fourth proportional to 13,210,311.90, 18,456,645.30 and 13,210,311.90 is: 18,456,645.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,210,311.90 : 18,456,645.30 = 13,210,311.90 : x
  2. Step 2: Convert to fraction form
    13,210,311.90/18,456,645.30 = 13,210,311.90/x
  3. Step 3: Cross multiply
    13,210,311.90x = 18,456,645.30 × 13,210,311.90
  4. Step 4: Simplify right side
    13,210,311.90x = 243,818,041,040,669.09
  5. Step 5: Solve for x
    x = 243,818,041,040,669.09/13,210,311.90
  6. Step 6: Final answer
    x = 18,456,645.30

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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.