Home / 20,712,107.46-31,136,270.45-19,213,877.60

Finding the Fourth Proportional to 20,712,107.46, 31,136,270.45 and 19,213,877.60

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Solution

The fourth proportional to 20,712,107.46, 31,136,270.45 and 19,213,877.60 is: 28,883,998.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,712,107.46 : 31,136,270.45 = 19,213,877.60 : x
  2. Step 2: Convert to fraction form
    20,712,107.46/31,136,270.45 = 19,213,877.60/x
  3. Step 3: Cross multiply
    20,712,107.46x = 31,136,270.45 × 19,213,877.60
  4. Step 4: Simplify right side
    20,712,107.46x = 598,248,489,095,046.12
  5. Step 5: Solve for x
    x = 598,248,489,095,046.12/20,712,107.46
  6. Step 6: Final answer
    x = 28,883,998.90

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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.