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Finding the Fourth Proportional to 17,392,942.40, 26,064,530.40 and 12,808,212.80

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Solution

The fourth proportional to 17,392,942.40, 26,064,530.40 and 12,808,212.80 is: 19,193,995.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,392,942.40 : 26,064,530.40 = 12,808,212.80 : x
  2. Step 2: Convert to fraction form
    17,392,942.40/26,064,530.40 = 12,808,212.80/x
  3. Step 3: Cross multiply
    17,392,942.40x = 26,064,530.40 × 12,808,212.80
  4. Step 4: Simplify right side
    17,392,942.40x = 333,840,051,895,269.12
  5. Step 5: Solve for x
    x = 333,840,051,895,269.12/17,392,942.40
  6. Step 6: Final answer
    x = 19,193,995.14

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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.