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Finding the Third Proportional to 12,187,216 and 18,931,608

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Solution

The third proportional to 12,187,216 and 18,931,608 is: 29,408,339.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,187,216 : 18,931,608 = 18,931,608 : x
  2. Step 2: Convert to fraction form
    12,187,216/18,931,608 = 18,931,608/x
  3. Step 3: Cross multiply
    12,187,216x = 18,931,608 × 18,931,608
  4. Step 4: Simplify right side
    12,187,216x = 358,405,781,465,664
  5. Step 5: Solve for x
    x = 358,405,781,465,664/12,187,216
  6. Step 6: Final answer
    x = 29,408,339.15

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.