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Finding the Fourth Proportional to 12,849,663.60, 19,237,170.60 and 12,476,415.60

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Solution

The fourth proportional to 12,849,663.60, 19,237,170.60 and 12,476,415.60 is: 18,678,382.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,849,663.60 : 19,237,170.60 = 12,476,415.60 : x
  2. Step 2: Convert to fraction form
    12,849,663.60/19,237,170.60 = 12,476,415.60/x
  3. Step 3: Cross multiply
    12,849,663.60x = 19,237,170.60 × 12,476,415.60
  4. Step 4: Simplify right side
    12,849,663.60x = 240,010,935,373,701.38
  5. Step 5: Solve for x
    x = 240,010,935,373,701.38/12,849,663.60
  6. Step 6: Final answer
    x = 18,678,382.78

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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.