Home / 20,712,105.96-31,136,268.20-19,213,876.10

Finding the Fourth Proportional to 20,712,105.96, 31,136,268.20 and 19,213,876.10

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Solution

The fourth proportional to 20,712,105.96, 31,136,268.20 and 19,213,876.10 is: 28,883,996.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,712,105.96 : 31,136,268.20 = 19,213,876.10 : x
  2. Step 2: Convert to fraction form
    20,712,105.96/31,136,268.20 = 19,213,876.10/x
  3. Step 3: Cross multiply
    20,712,105.96x = 31,136,268.20 × 19,213,876.10
  4. Step 4: Simplify right side
    20,712,105.96x = 598,248,399,159,419.25
  5. Step 5: Solve for x
    x = 598,248,399,159,419.25/20,712,105.96
  6. Step 6: Final answer
    x = 28,883,996.65

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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.