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Finding the Third Proportional to 15,390,515 and 21,646,470

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Solution

The third proportional to 15,390,515 and 21,646,470 is: 30,445,353.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,390,515 : 21,646,470 = 21,646,470 : x
  2. Step 2: Convert to fraction form
    15,390,515/21,646,470 = 21,646,470/x
  3. Step 3: Cross multiply
    15,390,515x = 21,646,470 × 21,646,470
  4. Step 4: Simplify right side
    15,390,515x = 468,569,663,460,900
  5. Step 5: Solve for x
    x = 468,569,663,460,900/15,390,515
  6. Step 6: Final answer
    x = 30,445,353.09

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.