Home / 11,029.80-16,544.70-8,405.40

Finding the Fourth Proportional to 11,029.80, 16,544.70 and 8,405.40

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Solution

The fourth proportional to 11,029.80, 16,544.70 and 8,405.40 is: 12,608.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,029.80 : 16,544.70 = 8,405.40 : x
  2. Step 2: Convert to fraction form
    11,029.80/16,544.70 = 8,405.40/x
  3. Step 3: Cross multiply
    11,029.80x = 16,544.70 × 8,405.40
  4. Step 4: Simplify right side
    11,029.80x = 139,064,821.38
  5. Step 5: Solve for x
    x = 139,064,821.38/11,029.80
  6. Step 6: Final answer
    x = 12,608.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.