Home / 13,431.60-18,529.65-8,950.99

Finding the Fourth Proportional to 13,431.60, 18,529.65 and 8,950.99

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Solution

The fourth proportional to 13,431.60, 18,529.65 and 8,950.99 is: 12,348.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,431.60 : 18,529.65 = 8,950.99 : x
  2. Step 2: Convert to fraction form
    13,431.60/18,529.65 = 8,950.99/x
  3. Step 3: Cross multiply
    13,431.60x = 18,529.65 × 8,950.99
  4. Step 4: Simplify right side
    13,431.60x = 165,858,711.85
  5. Step 5: Solve for x
    x = 165,858,711.85/13,431.60
  6. Step 6: Final answer
    x = 12,348.39

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1.5x scale

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.