Home / 27,623.10-38,119.77-15,685.86

Finding the Fourth Proportional to 27,623.10, 38,119.77 and 15,685.86

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Solution

The fourth proportional to 27,623.10, 38,119.77 and 15,685.86 is: 21,646.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,623.10 : 38,119.77 = 15,685.86 : x
  2. Step 2: Convert to fraction form
    27,623.10/38,119.77 = 15,685.86/x
  3. Step 3: Cross multiply
    27,623.10x = 38,119.77 × 15,685.86
  4. Step 4: Simplify right side
    27,623.10x = 597,941,375.45
  5. Step 5: Solve for x
    x = 597,941,375.45/27,623.10
  6. Step 6: Final answer
    x = 21,646.43

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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.