Home / 10,420.11-14,379.66-5,704.43

Finding the Fourth Proportional to 10,420.11, 14,379.66 and 5,704.43

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Solution

The fourth proportional to 10,420.11, 14,379.66 and 5,704.43 is: 7,872.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,420.11 : 14,379.66 = 5,704.43 : x
  2. Step 2: Convert to fraction form
    10,420.11/14,379.66 = 5,704.43/x
  3. Step 3: Cross multiply
    10,420.11x = 14,379.66 × 5,704.43
  4. Step 4: Simplify right side
    10,420.11x = 82,027,692.00
  5. Step 5: Solve for x
    x = 82,027,692.00/10,420.11
  6. Step 6: Final answer
    x = 7,872.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.