Home / 31,814.40-43,884.24-20,480.16

Finding the Fourth Proportional to 31,814.40, 43,884.24 and 20,480.16

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Solution

The fourth proportional to 31,814.40, 43,884.24 and 20,480.16 is: 28,249.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,814.40 : 43,884.24 = 20,480.16 : x
  2. Step 2: Convert to fraction form
    31,814.40/43,884.24 = 20,480.16/x
  3. Step 3: Cross multiply
    31,814.40x = 43,884.24 × 20,480.16
  4. Step 4: Simplify right side
    31,814.40x = 898,756,256.68
  5. Step 5: Solve for x
    x = 898,756,256.68/31,814.40
  6. Step 6: Final answer
    x = 28,249.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.