Home / 10,890.61-15,029.84-6,111.09

Finding the Fourth Proportional to 10,890.61, 15,029.84 and 6,111.09

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Solution

The fourth proportional to 10,890.61, 15,029.84 and 6,111.09 is: 8,433.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,890.61 : 15,029.84 = 6,111.09 : x
  2. Step 2: Convert to fraction form
    10,890.61/15,029.84 = 6,111.09/x
  3. Step 3: Cross multiply
    10,890.61x = 15,029.84 × 6,111.09
  4. Step 4: Simplify right side
    10,890.61x = 91,848,720.20
  5. Step 5: Solve for x
    x = 91,848,720.20/10,890.61
  6. Step 6: Final answer
    x = 8,433.76

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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.