Home / 30,221.64-41,719.59-20,676.87

Finding the Fourth Proportional to 30,221.64, 41,719.59 and 20,676.87

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Solution

The fourth proportional to 30,221.64, 41,719.59 and 20,676.87 is: 28,543.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,221.64 : 41,719.59 = 20,676.87 : x
  2. Step 2: Convert to fraction form
    30,221.64/41,719.59 = 20,676.87/x
  3. Step 3: Cross multiply
    30,221.64x = 41,719.59 × 20,676.87
  4. Step 4: Simplify right side
    30,221.64x = 862,630,538.88
  5. Step 5: Solve for x
    x = 862,630,538.88/30,221.64
  6. Step 6: Final answer
    x = 28,543.47

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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.