Home / 11,639.20-17,458.80-5,495.20

Finding the Fourth Proportional to 11,639.20, 17,458.80 and 5,495.20

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Solution

The fourth proportional to 11,639.20, 17,458.80 and 5,495.20 is: 8,242.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,639.20 : 17,458.80 = 5,495.20 : x
  2. Step 2: Convert to fraction form
    11,639.20/17,458.80 = 5,495.20/x
  3. Step 3: Cross multiply
    11,639.20x = 17,458.80 × 5,495.20
  4. Step 4: Simplify right side
    11,639.20x = 95,939,597.76
  5. Step 5: Solve for x
    x = 95,939,597.76/11,639.20
  6. Step 6: Final answer
    x = 8,242.80

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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.