Home / 20,090,207,985.60-30,135,311,978.40-15,731,865,739.20

Finding the Fourth Proportional to 20,090,207,985.60, 30,135,311,978.40 and 15,731,865,739.20

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Solution

The fourth proportional to 20,090,207,985.60, 30,135,311,978.40 and 15,731,865,739.20 is: 23,597,798,608.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,090,207,985.60 : 30,135,311,978.40 = 15,731,865,739.20 : x
  2. Step 2: Convert to fraction form
    20,090,207,985.60/30,135,311,978.40 = 15,731,865,739.20/x
  3. Step 3: Cross multiply
    20,090,207,985.60x = 30,135,311,978.40 × 15,731,865,739.20
  4. Step 4: Simplify right side
    20,090,207,985.60x = 474,084,682,053,094,408,192
  5. Step 5: Solve for x
    x = 474,084,682,053,094,408,192/20,090,207,985.60
  6. Step 6: Final answer
    x = 23,597,798,608.80

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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.