Home / 20,071.58-27,699.53-11,118.88

Finding the Fourth Proportional to 20,071.58, 27,699.53 and 11,118.88

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Solution

The fourth proportional to 20,071.58, 27,699.53 and 11,118.88 is: 15,344.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,071.58 : 27,699.53 = 11,118.88 : x
  2. Step 2: Convert to fraction form
    20,071.58/27,699.53 = 11,118.88/x
  3. Step 3: Cross multiply
    20,071.58x = 27,699.53 × 11,118.88
  4. Step 4: Simplify right side
    20,071.58x = 307,987,625.28
  5. Step 5: Solve for x
    x = 307,987,625.28/20,071.58
  6. Step 6: Final answer
    x = 15,344.47

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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.