Home / 27,640.24-38,142.12-15,064.88

Finding the Fourth Proportional to 27,640.24, 38,142.12 and 15,064.88

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Solution

The fourth proportional to 27,640.24, 38,142.12 and 15,064.88 is: 20,788.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,640.24 : 38,142.12 = 15,064.88 : x
  2. Step 2: Convert to fraction form
    27,640.24/38,142.12 = 15,064.88/x
  3. Step 3: Cross multiply
    27,640.24x = 38,142.12 × 15,064.88
  4. Step 4: Simplify right side
    27,640.24x = 574,606,460.75
  5. Step 5: Solve for x
    x = 574,606,460.75/27,640.24
  6. Step 6: Final answer
    x = 20,788.77

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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.