Home / 13,931.07-20,901.94-8,388.38

Finding the Fourth Proportional to 13,931.07, 20,901.94 and 8,388.38

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Solution

The fourth proportional to 13,931.07, 20,901.94 and 8,388.38 is: 12,585.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,931.07 : 20,901.94 = 8,388.38 : x
  2. Step 2: Convert to fraction form
    13,931.07/20,901.94 = 8,388.38/x
  3. Step 3: Cross multiply
    13,931.07x = 20,901.94 × 8,388.38
  4. Step 4: Simplify right side
    13,931.07x = 175,333,289.98
  5. Step 5: Solve for x
    x = 175,333,289.98/13,931.07
  6. Step 6: Final answer
    x = 12,585.77

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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.