Home / 20,430.29-30,671.36-17,371.73

Finding the Fourth Proportional to 20,430.29, 30,671.36 and 17,371.73

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Solution

The fourth proportional to 20,430.29, 30,671.36 and 17,371.73 is: 26,079.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,430.29 : 30,671.36 = 17,371.73 : x
  2. Step 2: Convert to fraction form
    20,430.29/30,671.36 = 17,371.73/x
  3. Step 3: Cross multiply
    20,430.29x = 30,671.36 × 17,371.73
  4. Step 4: Simplify right side
    20,430.29x = 532,814,584.65
  5. Step 5: Solve for x
    x = 532,814,584.65/20,430.29
  6. Step 6: Final answer
    x = 26,079.64

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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.