Home / 20,631,099.60-30,946,649.40-19,757,422.80

Finding the Fourth Proportional to 20,631,099.60, 30,946,649.40 and 19,757,422.80

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Solution

The fourth proportional to 20,631,099.60, 30,946,649.40 and 19,757,422.80 is: 29,636,134.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,631,099.60 : 30,946,649.40 = 19,757,422.80 : x
  2. Step 2: Convert to fraction form
    20,631,099.60/30,946,649.40 = 19,757,422.80/x
  3. Step 3: Cross multiply
    20,631,099.60x = 30,946,649.40 × 19,757,422.80
  4. Step 4: Simplify right side
    20,631,099.60x = 611,426,036,439,166.38
  5. Step 5: Solve for x
    x = 611,426,036,439,166.38/20,631,099.60
  6. Step 6: Final answer
    x = 29,636,134.20

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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.