Home / 20,906,889,501.06-28,851,142,659.21-11,391,520,014.90

Finding the Fourth Proportional to 20,906,889,501.06, 28,851,142,659.21 and 11,391,520,014.90

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Solution

The fourth proportional to 20,906,889,501.06, 28,851,142,659.21 and 11,391,520,014.90 is: 15,720,098,823.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,906,889,501.06 : 28,851,142,659.21 = 11,391,520,014.90 : x
  2. Step 2: Convert to fraction form
    20,906,889,501.06/28,851,142,659.21 = 11,391,520,014.90/x
  3. Step 3: Cross multiply
    20,906,889,501.06x = 28,851,142,659.21 × 11,391,520,014.90
  4. Step 4: Simplify right side
    20,906,889,501.06x = 328,658,369,055,125,929,984
  5. Step 5: Solve for x
    x = 328,658,369,055,125,929,984/20,906,889,501.06
  6. Step 6: Final answer
    x = 15,720,098,823.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.