Home / 11,145.42-15,385.44-7,370.28

Finding the Fourth Proportional to 11,145.42, 15,385.44 and 7,370.28

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Solution

The fourth proportional to 11,145.42, 15,385.44 and 7,370.28 is: 10,174.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,145.42 : 15,385.44 = 7,370.28 : x
  2. Step 2: Convert to fraction form
    11,145.42/15,385.44 = 7,370.28/x
  3. Step 3: Cross multiply
    11,145.42x = 15,385.44 × 7,370.28
  4. Step 4: Simplify right side
    11,145.42x = 113,395,000.72
  5. Step 5: Solve for x
    x = 113,395,000.72/11,145.42
  6. Step 6: Final answer
    x = 10,174.13

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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.