Home / 11,128.80-15,359.76-6,349.44

Finding the Fourth Proportional to 11,128.80, 15,359.76 and 6,349.44

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Solution

The fourth proportional to 11,128.80, 15,359.76 and 6,349.44 is: 8,763.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,128.80 : 15,359.76 = 6,349.44 : x
  2. Step 2: Convert to fraction form
    11,128.80/15,359.76 = 6,349.44/x
  3. Step 3: Cross multiply
    11,128.80x = 15,359.76 × 6,349.44
  4. Step 4: Simplify right side
    11,128.80x = 97,525,874.53
  5. Step 5: Solve for x
    x = 97,525,874.53/11,128.80
  6. Step 6: Final answer
    x = 8,763.38

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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.