Home / 20,161,848,738.80-30,242,773,108.20-18,936,400,905.20

Finding the Fourth Proportional to 20,161,848,738.80, 30,242,773,108.20 and 18,936,400,905.20

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Solution

The fourth proportional to 20,161,848,738.80, 30,242,773,108.20 and 18,936,400,905.20 is: 28,404,601,357.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,161,848,738.80 : 30,242,773,108.20 = 18,936,400,905.20 : x
  2. Step 2: Convert to fraction form
    20,161,848,738.80/30,242,773,108.20 = 18,936,400,905.20/x
  3. Step 3: Cross multiply
    20,161,848,738.80x = 30,242,773,108.20 × 18,936,400,905.20
  4. Step 4: Simplify right side
    20,161,848,738.80x = 572,689,276,061,876,748,288
  5. Step 5: Solve for x
    x = 572,689,276,061,876,748,288/20,161,848,738.80
  6. Step 6: Final answer
    x = 28,404,601,357.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.