Home / 11,125.18-15,358.30-6,408.55

Finding the Fourth Proportional to 11,125.18, 15,358.30 and 6,408.55

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Solution

The fourth proportional to 11,125.18, 15,358.30 and 6,408.55 is: 8,846.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,125.18 : 15,358.30 = 6,408.55 : x
  2. Step 2: Convert to fraction form
    11,125.18/15,358.30 = 6,408.55/x
  3. Step 3: Cross multiply
    11,125.18x = 15,358.30 × 6,408.55
  4. Step 4: Simplify right side
    11,125.18x = 98,424,379.05
  5. Step 5: Solve for x
    x = 98,424,379.05/11,125.18
  6. Step 6: Final answer
    x = 8,846.99

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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.