Home / 20,090,399,821.34-30,135,678,700.48-8,138,877,934.82

Finding the Fourth Proportional to 20,090,399,821.34, 30,135,678,700.48 and 8,138,877,934.82

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Solution

The fourth proportional to 20,090,399,821.34, 30,135,678,700.48 and 8,138,877,934.82 is: 12,208,348,893.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,090,399,821.34 : 30,135,678,700.48 = 8,138,877,934.82 : x
  2. Step 2: Convert to fraction form
    20,090,399,821.34/30,135,678,700.48 = 8,138,877,934.82/x
  3. Step 3: Cross multiply
    20,090,399,821.34x = 30,135,678,700.48 × 8,138,877,934.82
  4. Step 4: Simplify right side
    20,090,399,821.34x = 245,270,610,426,145,439,744
  5. Step 5: Solve for x
    x = 245,270,610,426,145,439,744/20,090,399,821.34
  6. Step 6: Final answer
    x = 12,208,348,893.37

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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.