Home / 14,231.20-21,346.80-6,455.20

Finding the Fourth Proportional to 14,231.20, 21,346.80 and 6,455.20

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Solution

The fourth proportional to 14,231.20, 21,346.80 and 6,455.20 is: 9,682.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,231.20 : 21,346.80 = 6,455.20 : x
  2. Step 2: Convert to fraction form
    14,231.20/21,346.80 = 6,455.20/x
  3. Step 3: Cross multiply
    14,231.20x = 21,346.80 × 6,455.20
  4. Step 4: Simplify right side
    14,231.20x = 137,797,863.36
  5. Step 5: Solve for x
    x = 137,797,863.36/14,231.20
  6. Step 6: Final answer
    x = 9,682.80

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1.5x scale

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.