Home / 27,921.72-38,533.14-15,983.40

Finding the Fourth Proportional to 27,921.72, 38,533.14 and 15,983.40

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Solution

The fourth proportional to 27,921.72, 38,533.14 and 15,983.40 is: 22,057.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,921.72 : 38,533.14 = 15,983.40 : x
  2. Step 2: Convert to fraction form
    27,921.72/38,533.14 = 15,983.40/x
  3. Step 3: Cross multiply
    27,921.72x = 38,533.14 × 15,983.40
  4. Step 4: Simplify right side
    27,921.72x = 615,890,589.88
  5. Step 5: Solve for x
    x = 615,890,589.88/27,921.72
  6. Step 6: Final answer
    x = 22,057.76

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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.