Home / 27,720.92-38,253.08-15,145.66

Finding the Fourth Proportional to 27,720.92, 38,253.08 and 15,145.66

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Solution

The fourth proportional to 27,720.92, 38,253.08 and 15,145.66 is: 20,900.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,720.92 : 38,253.08 = 15,145.66 : x
  2. Step 2: Convert to fraction form
    27,720.92/38,253.08 = 15,145.66/x
  3. Step 3: Cross multiply
    27,720.92x = 38,253.08 × 15,145.66
  4. Step 4: Simplify right side
    27,720.92x = 579,368,143.63
  5. Step 5: Solve for x
    x = 579,368,143.63/27,720.92
  6. Step 6: Final answer
    x = 20,900.03

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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.