Home / 27,721.07-38,255.20-15,145.82

Finding the Fourth Proportional to 27,721.07, 38,255.20 and 15,145.82

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Solution

The fourth proportional to 27,721.07, 38,255.20 and 15,145.82 is: 20,901.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,721.07 : 38,255.20 = 15,145.82 : x
  2. Step 2: Convert to fraction form
    27,721.07/38,255.20 = 15,145.82/x
  3. Step 3: Cross multiply
    27,721.07x = 38,255.20 × 15,145.82
  4. Step 4: Simplify right side
    27,721.07x = 579,406,373.26
  5. Step 5: Solve for x
    x = 579,406,373.26/27,721.07
  6. Step 6: Final answer
    x = 20,901.30

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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.