Home / 28,918.60-43,320.30-20,163.40

Finding the Fourth Proportional to 28,918.60, 43,320.30 and 20,163.40

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Solution

The fourth proportional to 28,918.60, 43,320.30 and 20,163.40 is: 30,204.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,918.60 : 43,320.30 = 20,163.40 : x
  2. Step 2: Convert to fraction form
    28,918.60/43,320.30 = 20,163.40/x
  3. Step 3: Cross multiply
    28,918.60x = 43,320.30 × 20,163.40
  4. Step 4: Simplify right side
    28,918.60x = 873,484,537.02
  5. Step 5: Solve for x
    x = 873,484,537.02/28,918.60
  6. Step 6: Final answer
    x = 30,204.94

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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.