Home / 13,438.36-20,157.54-11,125

Finding the Fourth Proportional to 13,438.36, 20,157.54 and 11,125

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Solution

The fourth proportional to 13,438.36, 20,157.54 and 11,125 is: 16,687.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,438.36 : 20,157.54 = 11,125 : x
  2. Step 2: Convert to fraction form
    13,438.36/20,157.54 = 11,125/x
  3. Step 3: Cross multiply
    13,438.36x = 20,157.54 × 11,125
  4. Step 4: Simplify right side
    13,438.36x = 224,252,632.50
  5. Step 5: Solve for x
    x = 224,252,632.50/13,438.36
  6. Step 6: Final answer
    x = 16,687.50

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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.