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Finding the Third Proportional to 12,158,720 and 18,974,208

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Solution

The third proportional to 12,158,720 and 18,974,208 is: 29,610,071.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,158,720 : 18,974,208 = 18,974,208 : x
  2. Step 2: Convert to fraction form
    12,158,720/18,974,208 = 18,974,208/x
  3. Step 3: Cross multiply
    12,158,720x = 18,974,208 × 18,974,208
  4. Step 4: Simplify right side
    12,158,720x = 360,020,569,227,264
  5. Step 5: Solve for x
    x = 360,020,569,227,264/12,158,720
  6. Step 6: Final answer
    x = 29,610,071.56

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.