Home / 21,019,061,309.76-28,851,796,293.68-18,586,910,157.12

Finding the Fourth Proportional to 21,019,061,309.76, 28,851,796,293.68 and 18,586,910,157.12

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Solution

The fourth proportional to 21,019,061,309.76, 28,851,796,293.68 and 18,586,910,157.12 is: 25,513,306,121.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,019,061,309.76 : 28,851,796,293.68 = 18,586,910,157.12 : x
  2. Step 2: Convert to fraction form
    21,019,061,309.76/28,851,796,293.68 = 18,586,910,157.12/x
  3. Step 3: Cross multiply
    21,019,061,309.76x = 28,851,796,293.68 × 18,586,910,157.12
  4. Step 4: Simplify right side
    21,019,061,309.76x = 536,265,745,582,157,922,304
  5. Step 5: Solve for x
    x = 536,265,745,582,157,922,304/21,019,061,309.76
  6. Step 6: Final answer
    x = 25,513,306,121.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.