Home / 20,212.32-30,211.71-17,558.76

Finding the Fourth Proportional to 20,212.32, 30,211.71 and 17,558.76

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Solution

The fourth proportional to 20,212.32, 30,211.71 and 17,558.76 is: 26,245.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,212.32 : 30,211.71 = 17,558.76 : x
  2. Step 2: Convert to fraction form
    20,212.32/30,211.71 = 17,558.76/x
  3. Step 3: Cross multiply
    20,212.32x = 30,211.71 × 17,558.76
  4. Step 4: Simplify right side
    20,212.32x = 530,480,165.08
  5. Step 5: Solve for x
    x = 530,480,165.08/20,212.32
  6. Step 6: Final answer
    x = 26,245.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.