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Finding the Fourth Proportional to 13,631,462.40, 20,463,782.40 and 6,896,409.60

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Solution

The fourth proportional to 13,631,462.40, 20,463,782.40 and 6,896,409.60 is: 10,353,006.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,631,462.40 : 20,463,782.40 = 6,896,409.60 : x
  2. Step 2: Convert to fraction form
    13,631,462.40/20,463,782.40 = 6,896,409.60/x
  3. Step 3: Cross multiply
    13,631,462.40x = 20,463,782.40 × 6,896,409.60
  4. Step 4: Simplify right side
    13,631,462.40x = 141,126,625,395,671.03
  5. Step 5: Solve for x
    x = 141,126,625,395,671.03/13,631,462.40
  6. Step 6: Final answer
    x = 10,353,006.98

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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.