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Finding the Third Proportional to 15,418,863,108 and 20,803,666,689

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Solution

The third proportional to 15,418,863,108 and 20,803,666,689 is: 28,069,031,074.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,418,863,108 : 20,803,666,689 = 20,803,666,689 : x
  2. Step 2: Convert to fraction form
    15,418,863,108/20,803,666,689 = 20,803,666,689/x
  3. Step 3: Cross multiply
    15,418,863,108x = 20,803,666,689 × 20,803,666,689
  4. Step 4: Simplify right side
    15,418,863,108x = 432,792,547,707,008,253,952
  5. Step 5: Solve for x
    x = 432,792,547,707,008,253,952/15,418,863,108
  6. Step 6: Final answer
    x = 28,069,031,074.18

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.