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Finding the Third Proportional to 21,687,308 and 28,913,178

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Solution

The third proportional to 21,687,308 and 28,913,178 is: 38,546,594.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,687,308 : 28,913,178 = 28,913,178 : x
  2. Step 2: Convert to fraction form
    21,687,308/28,913,178 = 28,913,178/x
  3. Step 3: Cross multiply
    21,687,308x = 28,913,178 × 28,913,178
  4. Step 4: Simplify right side
    21,687,308x = 835,971,862,059,684
  5. Step 5: Solve for x
    x = 835,971,862,059,684/21,687,308
  6. Step 6: Final answer
    x = 38,546,594.26

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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.