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Finding the Fourth Proportional to 12,689,602.26, 19,041,602.26 and 6,853,715.78

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Solution

The fourth proportional to 12,689,602.26, 19,041,602.26 and 6,853,715.78 is: 10,284,461.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,689,602.26 : 19,041,602.26 = 6,853,715.78 : x
  2. Step 2: Convert to fraction form
    12,689,602.26/19,041,602.26 = 6,853,715.78/x
  3. Step 3: Cross multiply
    12,689,602.26x = 19,041,602.26 × 6,853,715.78
  4. Step 4: Simplify right side
    12,689,602.26x = 130,505,729,786,354.08
  5. Step 5: Solve for x
    x = 130,505,729,786,354.08/12,689,602.26
  6. Step 6: Final answer
    x = 10,284,461.81

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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.