Home / 27,619.68-38,129.28-18,714.24

Finding the Fourth Proportional to 27,619.68, 38,129.28 and 18,714.24

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Solution

The fourth proportional to 27,619.68, 38,129.28 and 18,714.24 is: 25,835.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,619.68 : 38,129.28 = 18,714.24 : x
  2. Step 2: Convert to fraction form
    27,619.68/38,129.28 = 18,714.24/x
  3. Step 3: Cross multiply
    27,619.68x = 38,129.28 × 18,714.24
  4. Step 4: Simplify right side
    27,619.68x = 713,560,496.95
  5. Step 5: Solve for x
    x = 713,560,496.95/27,619.68
  6. Step 6: Final answer
    x = 25,835.22

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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.