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Finding the Third Proportional to 21,684,488 and 28,908,748

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Solution

The third proportional to 21,684,488 and 28,908,748 is: 38,539,794.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,684,488 : 28,908,748 = 28,908,748 : x
  2. Step 2: Convert to fraction form
    21,684,488/28,908,748 = 28,908,748/x
  3. Step 3: Cross multiply
    21,684,488x = 28,908,748 × 28,908,748
  4. Step 4: Simplify right side
    21,684,488x = 835,715,710,927,504
  5. Step 5: Solve for x
    x = 835,715,710,927,504/21,684,488
  6. Step 6: Final answer
    x = 38,539,794.48

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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.