Home / 12,221.56-18,332.68-4,322.96

Finding the Fourth Proportional to 12,221.56, 18,332.68 and 4,322.96

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Solution

The fourth proportional to 12,221.56, 18,332.68 and 4,322.96 is: 6,484.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,221.56 : 18,332.68 = 4,322.96 : x
  2. Step 2: Convert to fraction form
    12,221.56/18,332.68 = 4,322.96/x
  3. Step 3: Cross multiply
    12,221.56x = 18,332.68 × 4,322.96
  4. Step 4: Simplify right side
    12,221.56x = 79,251,424.82
  5. Step 5: Solve for x
    x = 79,251,424.82/12,221.56
  6. Step 6: Final answer
    x = 6,484.56

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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.