Home / 11,175.21-15,423.35-7,455.69

Finding the Fourth Proportional to 11,175.21, 15,423.35 and 7,455.69

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Solution

The fourth proportional to 11,175.21, 15,423.35 and 7,455.69 is: 10,289.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,175.21 : 15,423.35 = 7,455.69 : x
  2. Step 2: Convert to fraction form
    11,175.21/15,423.35 = 7,455.69/x
  3. Step 3: Cross multiply
    11,175.21x = 15,423.35 × 7,455.69
  4. Step 4: Simplify right side
    11,175.21x = 114,991,679.08
  5. Step 5: Solve for x
    x = 114,991,679.08/11,175.21
  6. Step 6: Final answer
    x = 10,289.89

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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.