Home / 27,620.23-38,119.88-15,684.68

Finding the Fourth Proportional to 27,620.23, 38,119.88 and 15,684.68

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Solution

The fourth proportional to 27,620.23, 38,119.88 and 15,684.68 is: 21,647.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,620.23 : 38,119.88 = 15,684.68 : x
  2. Step 2: Convert to fraction form
    27,620.23/38,119.88 = 15,684.68/x
  3. Step 3: Cross multiply
    27,620.23x = 38,119.88 × 15,684.68
  4. Step 4: Simplify right side
    27,620.23x = 597,898,119.44
  5. Step 5: Solve for x
    x = 597,898,119.44/27,620.23
  6. Step 6: Final answer
    x = 21,647.11

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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.