Home / 10,420.75-14,380.77-5,704.93

Finding the Fourth Proportional to 10,420.75, 14,380.77 and 5,704.93

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Solution

The fourth proportional to 10,420.75, 14,380.77 and 5,704.93 is: 7,872.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,420.75 : 14,380.77 = 5,704.93 : x
  2. Step 2: Convert to fraction form
    10,420.75/14,380.77 = 5,704.93/x
  3. Step 3: Cross multiply
    10,420.75x = 14,380.77 × 5,704.93
  4. Step 4: Simplify right side
    10,420.75x = 82,041,286.20
  5. Step 5: Solve for x
    x = 82,041,286.20/10,420.75
  6. Step 6: Final answer
    x = 7,872.88

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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.