Home / 10,890.44-15,028.80-6,174.72

Finding the Fourth Proportional to 10,890.44, 15,028.80 and 6,174.72

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Solution

The fourth proportional to 10,890.44, 15,028.80 and 6,174.72 is: 8,521.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,890.44 : 15,028.80 = 6,174.72 : x
  2. Step 2: Convert to fraction form
    10,890.44/15,028.80 = 6,174.72/x
  3. Step 3: Cross multiply
    10,890.44x = 15,028.80 × 6,174.72
  4. Step 4: Simplify right side
    10,890.44x = 92,798,631.94
  5. Step 5: Solve for x
    x = 92,798,631.94/10,890.44
  6. Step 6: Final answer
    x = 8,521.11

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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.