Home / 25,639.37-38,457.30-12,321.89

Finding the Fourth Proportional to 25,639.37, 38,457.30 and 12,321.89

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Solution

The fourth proportional to 25,639.37, 38,457.30 and 12,321.89 is: 18,481.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,639.37 : 38,457.30 = 12,321.89 : x
  2. Step 2: Convert to fraction form
    25,639.37/38,457.30 = 12,321.89/x
  3. Step 3: Cross multiply
    25,639.37x = 38,457.30 × 12,321.89
  4. Step 4: Simplify right side
    25,639.37x = 473,866,620.30
  5. Step 5: Solve for x
    x = 473,866,620.30/25,639.37
  6. Step 6: Final answer
    x = 18,481.99

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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.