Home / 13,688.36-20,425.03-12,852.44

Finding the Fourth Proportional to 13,688.36, 20,425.03 and 12,852.44

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Solution

The fourth proportional to 13,688.36, 20,425.03 and 12,852.44 is: 19,177.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,688.36 : 20,425.03 = 12,852.44 : x
  2. Step 2: Convert to fraction form
    13,688.36/20,425.03 = 12,852.44/x
  3. Step 3: Cross multiply
    13,688.36x = 20,425.03 × 12,852.44
  4. Step 4: Simplify right side
    13,688.36x = 262,511,472.57
  5. Step 5: Solve for x
    x = 262,511,472.57/13,688.36
  6. Step 6: Final answer
    x = 19,177.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.