Home / 20,071.88-27,699.40-11,119.58

Finding the Fourth Proportional to 20,071.88, 27,699.40 and 11,119.58

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Solution

The fourth proportional to 20,071.88, 27,699.40 and 11,119.58 is: 15,345.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,071.88 : 27,699.40 = 11,119.58 : x
  2. Step 2: Convert to fraction form
    20,071.88/27,699.40 = 11,119.58/x
  3. Step 3: Cross multiply
    20,071.88x = 27,699.40 × 11,119.58
  4. Step 4: Simplify right side
    20,071.88x = 308,005,673.53
  5. Step 5: Solve for x
    x = 308,005,673.53/20,071.88
  6. Step 6: Final answer
    x = 15,345.13

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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.