Home / 13,828.10-20,723.61-12,942.36

Finding the Fourth Proportional to 13,828.10, 20,723.61 and 12,942.36

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Solution

The fourth proportional to 13,828.10, 20,723.61 and 12,942.36 is: 19,396.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,828.10 : 20,723.61 = 12,942.36 : x
  2. Step 2: Convert to fraction form
    13,828.10/20,723.61 = 12,942.36/x
  3. Step 3: Cross multiply
    13,828.10x = 20,723.61 × 12,942.36
  4. Step 4: Simplify right side
    13,828.10x = 268,212,421.12
  5. Step 5: Solve for x
    x = 268,212,421.12/13,828.10
  6. Step 6: Final answer
    x = 19,396.19

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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.