Home / 20,155,391,996.80-30,233,087,995.20-12,318,975,587.20

Finding the Fourth Proportional to 20,155,391,996.80, 30,233,087,995.20 and 12,318,975,587.20

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Solution

The fourth proportional to 20,155,391,996.80, 30,233,087,995.20 and 12,318,975,587.20 is: 18,478,463,380.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,155,391,996.80 : 30,233,087,995.20 = 12,318,975,587.20 : x
  2. Step 2: Convert to fraction form
    20,155,391,996.80/30,233,087,995.20 = 12,318,975,587.20/x
  3. Step 3: Cross multiply
    20,155,391,996.80x = 30,233,087,995.20 × 12,318,975,587.20
  4. Step 4: Simplify right side
    20,155,391,996.80x = 372,440,672,938,538,237,952
  5. Step 5: Solve for x
    x = 372,440,672,938,538,237,952/20,155,391,996.80
  6. Step 6: Final answer
    x = 18,478,463,380.80

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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.