Home / 14,279.87-21,419.40-5,516.69

Finding the Fourth Proportional to 14,279.87, 21,419.40 and 5,516.69

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Solution

The fourth proportional to 14,279.87, 21,419.40 and 5,516.69 is: 8,274.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,279.87 : 21,419.40 = 5,516.69 : x
  2. Step 2: Convert to fraction form
    14,279.87/21,419.40 = 5,516.69/x
  3. Step 3: Cross multiply
    14,279.87x = 21,419.40 × 5,516.69
  4. Step 4: Simplify right side
    14,279.87x = 118,164,103.38
  5. Step 5: Solve for x
    x = 118,164,103.38/14,279.87
  6. Step 6: Final answer
    x = 8,274.87

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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.