Home / 13,291.44-18,339.66-7,984.32

Finding the Fourth Proportional to 13,291.44, 18,339.66 and 7,984.32

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Solution

The fourth proportional to 13,291.44, 18,339.66 and 7,984.32 is: 11,016.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,291.44 : 18,339.66 = 7,984.32 : x
  2. Step 2: Convert to fraction form
    13,291.44/18,339.66 = 7,984.32/x
  3. Step 3: Cross multiply
    13,291.44x = 18,339.66 × 7,984.32
  4. Step 4: Simplify right side
    13,291.44x = 146,429,714.13
  5. Step 5: Solve for x
    x = 146,429,714.13/13,291.44
  6. Step 6: Final answer
    x = 11,016.84

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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.