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Finding the Third Proportional to 12,990,255 and 19,791,790.50

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Solution

The third proportional to 12,990,255 and 19,791,790.50 is: 30,154,525.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,990,255 : 19,791,790.50 = 19,791,790.50 : x
  2. Step 2: Convert to fraction form
    12,990,255/19,791,790.50 = 19,791,790.50/x
  3. Step 3: Cross multiply
    12,990,255x = 19,791,790.50 × 19,791,790.50
  4. Step 4: Simplify right side
    12,990,255x = 391,714,971,195,890.25
  5. Step 5: Solve for x
    x = 391,714,971,195,890.25/12,990,255
  6. Step 6: Final answer
    x = 30,154,525.16

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.