Home / 30,076.24-45,121.68-21,208.88

Finding the Fourth Proportional to 30,076.24, 45,121.68 and 21,208.88

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Solution

The fourth proportional to 30,076.24, 45,121.68 and 21,208.88 is: 31,818.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,076.24 : 45,121.68 = 21,208.88 : x
  2. Step 2: Convert to fraction form
    30,076.24/45,121.68 = 21,208.88/x
  3. Step 3: Cross multiply
    30,076.24x = 45,121.68 × 21,208.88
  4. Step 4: Simplify right side
    30,076.24x = 956,980,296.52
  5. Step 5: Solve for x
    x = 956,980,296.52/30,076.24
  6. Step 6: Final answer
    x = 31,818.48

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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.