Home / 20,774,936.40-31,164,175.80-5,424,262.80

Finding the Fourth Proportional to 20,774,936.40, 31,164,175.80 and 5,424,262.80

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Solution

The fourth proportional to 20,774,936.40, 31,164,175.80 and 5,424,262.80 is: 8,136,856.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,774,936.40 : 31,164,175.80 = 5,424,262.80 : x
  2. Step 2: Convert to fraction form
    20,774,936.40/31,164,175.80 = 5,424,262.80/x
  3. Step 3: Cross multiply
    20,774,936.40x = 31,164,175.80 × 5,424,262.80
  4. Step 4: Simplify right side
    20,774,936.40x = 169,042,679,484,600.25
  5. Step 5: Solve for x
    x = 169,042,679,484,600.25/20,774,936.40
  6. Step 6: Final answer
    x = 8,136,856.65

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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.