Home / 21,785.44-30,027.36-16,679.20

Finding the Fourth Proportional to 21,785.44, 30,027.36 and 16,679.20

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Solution

The fourth proportional to 21,785.44, 30,027.36 and 16,679.20 is: 22,989.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,785.44 : 30,027.36 = 16,679.20 : x
  2. Step 2: Convert to fraction form
    21,785.44/30,027.36 = 16,679.20/x
  3. Step 3: Cross multiply
    21,785.44x = 30,027.36 × 16,679.20
  4. Step 4: Simplify right side
    21,785.44x = 500,832,342.91
  5. Step 5: Solve for x
    x = 500,832,342.91/21,785.44
  6. Step 6: Final answer
    x = 22,989.32

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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.