Home / 13,738.45-18,953.68-8,964

Finding the Fourth Proportional to 13,738.45, 18,953.68 and 8,964

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Solution

The fourth proportional to 13,738.45, 18,953.68 and 8,964 is: 12,366.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,738.45 : 18,953.68 = 8,964 : x
  2. Step 2: Convert to fraction form
    13,738.45/18,953.68 = 8,964/x
  3. Step 3: Cross multiply
    13,738.45x = 18,953.68 × 8,964
  4. Step 4: Simplify right side
    13,738.45x = 169,900,787.52
  5. Step 5: Solve for x
    x = 169,900,787.52/13,738.45
  6. Step 6: Final answer
    x = 12,366.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.