Home / 11,271.55-15,545.30-8,445.56

Finding the Fourth Proportional to 11,271.55, 15,545.30 and 8,445.56

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Solution

The fourth proportional to 11,271.55, 15,545.30 and 8,445.56 is: 11,647.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,271.55 : 15,545.30 = 8,445.56 : x
  2. Step 2: Convert to fraction form
    11,271.55/15,545.30 = 8,445.56/x
  3. Step 3: Cross multiply
    11,271.55x = 15,545.30 × 8,445.56
  4. Step 4: Simplify right side
    11,271.55x = 131,288,763.87
  5. Step 5: Solve for x
    x = 131,288,763.87/11,271.55
  6. Step 6: Final answer
    x = 11,647.80

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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.