Home / 30,472.09-45,713.24-10,480.78

Finding the Fourth Proportional to 30,472.09, 45,713.24 and 10,480.78

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Solution

The fourth proportional to 30,472.09, 45,713.24 and 10,480.78 is: 15,722.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,472.09 : 45,713.24 = 10,480.78 : x
  2. Step 2: Convert to fraction form
    30,472.09/45,713.24 = 10,480.78/x
  3. Step 3: Cross multiply
    30,472.09x = 45,713.24 × 10,480.78
  4. Step 4: Simplify right side
    30,472.09x = 479,110,198.43
  5. Step 5: Solve for x
    x = 479,110,198.43/30,472.09
  6. Step 6: Final answer
    x = 15,722.92

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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.