Home / 43,803.19-65,715.75-12,638.44

Finding the Fourth Proportional to 43,803.19, 65,715.75 and 12,638.44

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Solution

The fourth proportional to 43,803.19, 65,715.75 and 12,638.44 is: 18,960.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,803.19 : 65,715.75 = 12,638.44 : x
  2. Step 2: Convert to fraction form
    43,803.19/65,715.75 = 12,638.44/x
  3. Step 3: Cross multiply
    43,803.19x = 65,715.75 × 12,638.44
  4. Step 4: Simplify right side
    43,803.19x = 830,544,563.43
  5. Step 5: Solve for x
    x = 830,544,563.43/43,803.19
  6. Step 6: Final answer
    x = 18,960.82

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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.