Home / 13,428.24-20,141.94-7,877.34

Finding the Fourth Proportional to 13,428.24, 20,141.94 and 7,877.34

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Solution

The fourth proportional to 13,428.24, 20,141.94 and 7,877.34 is: 11,815.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,428.24 : 20,141.94 = 7,877.34 : x
  2. Step 2: Convert to fraction form
    13,428.24/20,141.94 = 7,877.34/x
  3. Step 3: Cross multiply
    13,428.24x = 20,141.94 × 7,877.34
  4. Step 4: Simplify right side
    13,428.24x = 158,664,909.64
  5. Step 5: Solve for x
    x = 158,664,909.64/13,428.24
  6. Step 6: Final answer
    x = 11,815.76

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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.