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Finding the Third Proportional to 21,990,528 and 28,917,963

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Solution

The third proportional to 21,990,528 and 28,917,963 is: 38,027,671.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,990,528 : 28,917,963 = 28,917,963 : x
  2. Step 2: Convert to fraction form
    21,990,528/28,917,963 = 28,917,963/x
  3. Step 3: Cross multiply
    21,990,528x = 28,917,963 × 28,917,963
  4. Step 4: Simplify right side
    21,990,528x = 836,248,584,069,369
  5. Step 5: Solve for x
    x = 836,248,584,069,369/21,990,528
  6. Step 6: Final answer
    x = 38,027,671.92

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Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.