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Finding the Third Proportional to 21,684,216 and 28,908,360

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Solution

The third proportional to 21,684,216 and 28,908,360 is: 38,539,243.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,684,216 : 28,908,360 = 28,908,360 : x
  2. Step 2: Convert to fraction form
    21,684,216/28,908,360 = 28,908,360/x
  3. Step 3: Cross multiply
    21,684,216x = 28,908,360 × 28,908,360
  4. Step 4: Simplify right side
    21,684,216x = 835,693,277,889,600
  5. Step 5: Solve for x
    x = 835,693,277,889,600/21,684,216
  6. Step 6: Final answer
    x = 38,539,243.38

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.