Home / 11,091.20-15,307.40-6,375.38

Finding the Fourth Proportional to 11,091.20, 15,307.40 and 6,375.38

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Solution

The fourth proportional to 11,091.20, 15,307.40 and 6,375.38 is: 8,798.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,091.20 : 15,307.40 = 6,375.38 : x
  2. Step 2: Convert to fraction form
    11,091.20/15,307.40 = 6,375.38/x
  3. Step 3: Cross multiply
    11,091.20x = 15,307.40 × 6,375.38
  4. Step 4: Simplify right side
    11,091.20x = 97,590,491.81
  5. Step 5: Solve for x
    x = 97,590,491.81/11,091.20
  6. Step 6: Final answer
    x = 8,798.91

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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.