Home / 20,130.06-30,132.37-18,017.31

Finding the Fourth Proportional to 20,130.06, 30,132.37 and 18,017.31

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Solution

The fourth proportional to 20,130.06, 30,132.37 and 18,017.31 is: 26,969.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,130.06 : 30,132.37 = 18,017.31 : x
  2. Step 2: Convert to fraction form
    20,130.06/30,132.37 = 18,017.31/x
  3. Step 3: Cross multiply
    20,130.06x = 30,132.37 × 18,017.31
  4. Step 4: Simplify right side
    20,130.06x = 542,904,251.32
  5. Step 5: Solve for x
    x = 542,904,251.32/20,130.06
  6. Step 6: Final answer
    x = 26,969.83

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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.