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Finding the Third Proportional to 12,153,520 and 18,812,532

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Solution

The third proportional to 12,153,520 and 18,812,532 is: 29,120,070.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,153,520 : 18,812,532 = 18,812,532 : x
  2. Step 2: Convert to fraction form
    12,153,520/18,812,532 = 18,812,532/x
  3. Step 3: Cross multiply
    12,153,520x = 18,812,532 × 18,812,532
  4. Step 4: Simplify right side
    12,153,520x = 353,911,360,251,024
  5. Step 5: Solve for x
    x = 353,911,360,251,024/12,153,520
  6. Step 6: Final answer
    x = 29,120,070.58

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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.