Home / 27,721.14-38,254.34-15,145.88

Finding the Fourth Proportional to 27,721.14, 38,254.34 and 15,145.88

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Solution

The fourth proportional to 27,721.14, 38,254.34 and 15,145.88 is: 20,900.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,721.14 : 38,254.34 = 15,145.88 : x
  2. Step 2: Convert to fraction form
    27,721.14/38,254.34 = 15,145.88/x
  3. Step 3: Cross multiply
    27,721.14x = 38,254.34 × 15,145.88
  4. Step 4: Simplify right side
    27,721.14x = 579,395,643.12
  5. Step 5: Solve for x
    x = 579,395,643.12/27,721.14
  6. Step 6: Final answer
    x = 20,900.86

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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.