Home / 30,084.24-45,133.68-21,216.88

Finding the Fourth Proportional to 30,084.24, 45,133.68 and 21,216.88

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Solution

The fourth proportional to 30,084.24, 45,133.68 and 21,216.88 is: 31,830.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,084.24 : 45,133.68 = 21,216.88 : x
  2. Step 2: Convert to fraction form
    30,084.24/45,133.68 = 21,216.88/x
  3. Step 3: Cross multiply
    30,084.24x = 45,133.68 × 21,216.88
  4. Step 4: Simplify right side
    30,084.24x = 957,595,872.52
  5. Step 5: Solve for x
    x = 957,595,872.52/30,084.24
  6. Step 6: Final answer
    x = 31,830.48

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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.