Home / 31,671.33-43,666.73-20,320.80

Finding the Fourth Proportional to 31,671.33, 43,666.73 and 20,320.80

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Solution

The fourth proportional to 31,671.33, 43,666.73 and 20,320.80 is: 28,017.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,671.33 : 43,666.73 = 20,320.80 : x
  2. Step 2: Convert to fraction form
    31,671.33/43,666.73 = 20,320.80/x
  3. Step 3: Cross multiply
    31,671.33x = 43,666.73 × 20,320.80
  4. Step 4: Simplify right side
    31,671.33x = 887,342,785.38
  5. Step 5: Solve for x
    x = 887,342,785.38/31,671.33
  6. Step 6: Final answer
    x = 28,017.23

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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.