Home / 43,623.40-65,435.10-12,454.60

Finding the Fourth Proportional to 43,623.40, 65,435.10 and 12,454.60

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Solution

The fourth proportional to 43,623.40, 65,435.10 and 12,454.60 is: 18,681.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,623.40 : 65,435.10 = 12,454.60 : x
  2. Step 2: Convert to fraction form
    43,623.40/65,435.10 = 12,454.60/x
  3. Step 3: Cross multiply
    43,623.40x = 65,435.10 × 12,454.60
  4. Step 4: Simplify right side
    43,623.40x = 814,967,996.46
  5. Step 5: Solve for x
    x = 814,967,996.46/43,623.40
  6. Step 6: Final answer
    x = 18,681.90

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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.