Home / 43,972.40-65,955.72-12,810.80

Finding the Fourth Proportional to 43,972.40, 65,955.72 and 12,810.80

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Solution

The fourth proportional to 43,972.40, 65,955.72 and 12,810.80 is: 19,215.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,972.40 : 65,955.72 = 12,810.80 : x
  2. Step 2: Convert to fraction form
    43,972.40/65,955.72 = 12,810.80/x
  3. Step 3: Cross multiply
    43,972.40x = 65,955.72 × 12,810.80
  4. Step 4: Simplify right side
    43,972.40x = 844,945,537.78
  5. Step 5: Solve for x
    x = 844,945,537.78/43,972.40
  6. Step 6: Final answer
    x = 19,215.36

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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.