Home / 11,518.02-17,272.80-4,120.47

Finding the Fourth Proportional to 11,518.02, 17,272.80 and 4,120.47

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Solution

The fourth proportional to 11,518.02, 17,272.80 and 4,120.47 is: 6,179.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,518.02 : 17,272.80 = 4,120.47 : x
  2. Step 2: Convert to fraction form
    11,518.02/17,272.80 = 4,120.47/x
  3. Step 3: Cross multiply
    11,518.02x = 17,272.80 × 4,120.47
  4. Step 4: Simplify right side
    11,518.02x = 71,172,054.22
  5. Step 5: Solve for x
    x = 71,172,054.22/11,518.02
  6. Step 6: Final answer
    x = 6,179.19

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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.