Home / 20,349.21-30,518.90-5,558.21

Finding the Fourth Proportional to 20,349.21, 30,518.90 and 5,558.21

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Solution

The fourth proportional to 20,349.21, 30,518.90 and 5,558.21 is: 8,335.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,349.21 : 30,518.90 = 5,558.21 : x
  2. Step 2: Convert to fraction form
    20,349.21/30,518.90 = 5,558.21/x
  3. Step 3: Cross multiply
    20,349.21x = 30,518.90 × 5,558.21
  4. Step 4: Simplify right side
    20,349.21x = 169,630,274.78
  5. Step 5: Solve for x
    x = 169,630,274.78/20,349.21
  6. Step 6: Final answer
    x = 8,335.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.