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Finding the Fourth Proportional to 30,210.82, 45,332.22 and 21,958.94

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Solution

The fourth proportional to 30,210.82, 45,332.22 and 21,958.94 is: 32,950.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,210.82 : 45,332.22 = 21,958.94 : x
  2. Step 2: Convert to fraction form
    30,210.82/45,332.22 = 21,958.94/x
  3. Step 3: Cross multiply
    30,210.82x = 45,332.22 × 21,958.94
  4. Step 4: Simplify right side
    30,210.82x = 995,447,499.05
  5. Step 5: Solve for x
    x = 995,447,499.05/30,210.82
  6. Step 6: Final answer
    x = 32,950.03

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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.