Home / 10,369.60-15,554.37-8,279.81

Finding the Fourth Proportional to 10,369.60, 15,554.37 and 8,279.81

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Solution

The fourth proportional to 10,369.60, 15,554.37 and 8,279.81 is: 12,419.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,369.60 : 15,554.37 = 8,279.81 : x
  2. Step 2: Convert to fraction form
    10,369.60/15,554.37 = 8,279.81/x
  3. Step 3: Cross multiply
    10,369.60x = 15,554.37 × 8,279.81
  4. Step 4: Simplify right side
    10,369.60x = 128,787,239.88
  5. Step 5: Solve for x
    x = 128,787,239.88/10,369.60
  6. Step 6: Final answer
    x = 12,419.70

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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.