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Finding the Fourth Proportional to 12,672,065.10, 19,008,097.65 and 8,640,986.70

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Solution

The fourth proportional to 12,672,065.10, 19,008,097.65 and 8,640,986.70 is: 12,961,480.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,672,065.10 : 19,008,097.65 = 8,640,986.70 : x
  2. Step 2: Convert to fraction form
    12,672,065.10/19,008,097.65 = 8,640,986.70/x
  3. Step 3: Cross multiply
    12,672,065.10x = 19,008,097.65 × 8,640,986.70
  4. Step 4: Simplify right side
    12,672,065.10x = 164,248,718,985,951.22
  5. Step 5: Solve for x
    x = 164,248,718,985,951.22/12,672,065.10
  6. Step 6: Final answer
    x = 12,961,480.05

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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.