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Finding the Fourth Proportional to 12,696,916.20, 19,045,374.30 and 9,463,655.40

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Solution

The fourth proportional to 12,696,916.20, 19,045,374.30 and 9,463,655.40 is: 14,195,483.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,696,916.20 : 19,045,374.30 = 9,463,655.40 : x
  2. Step 2: Convert to fraction form
    12,696,916.20/19,045,374.30 = 9,463,655.40/x
  3. Step 3: Cross multiply
    12,696,916.20x = 19,045,374.30 × 9,463,655.40
  4. Step 4: Simplify right side
    12,696,916.20x = 180,238,859,339,216.22
  5. Step 5: Solve for x
    x = 180,238,859,339,216.22/12,696,916.20
  6. Step 6: Final answer
    x = 14,195,483.10

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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.