Home / 20,129.06-30,130.88-18,016.31

Finding the Fourth Proportional to 20,129.06, 30,130.88 and 18,016.31

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Solution

The fourth proportional to 20,129.06, 30,130.88 and 18,016.31 is: 26,968.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,129.06 : 30,130.88 = 18,016.31 : x
  2. Step 2: Convert to fraction form
    20,129.06/30,130.88 = 18,016.31/x
  3. Step 3: Cross multiply
    20,129.06x = 30,130.88 × 18,016.31
  4. Step 4: Simplify right side
    20,129.06x = 542,847,033.92
  5. Step 5: Solve for x
    x = 542,847,033.92/20,129.06
  6. Step 6: Final answer
    x = 26,968.33

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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.