Home / 30,209.22-45,329.22-21,381.30

Finding the Fourth Proportional to 30,209.22, 45,329.22 and 21,381.30

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Solution

The fourth proportional to 30,209.22, 45,329.22 and 21,381.30 is: 32,082.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,209.22 : 45,329.22 = 21,381.30 : x
  2. Step 2: Convert to fraction form
    30,209.22/45,329.22 = 21,381.30/x
  3. Step 3: Cross multiply
    30,209.22x = 45,329.22 × 21,381.30
  4. Step 4: Simplify right side
    30,209.22x = 969,197,651.59
  5. Step 5: Solve for x
    x = 969,197,651.59/30,209.22
  6. Step 6: Final answer
    x = 32,082.84

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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.