Home / 30,158.80-45,216.33-20,273.56

Finding the Fourth Proportional to 30,158.80, 45,216.33 and 20,273.56

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Solution

The fourth proportional to 30,158.80, 45,216.33 and 20,273.56 is: 30,395.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,158.80 : 45,216.33 = 20,273.56 : x
  2. Step 2: Convert to fraction form
    30,158.80/45,216.33 = 20,273.56/x
  3. Step 3: Cross multiply
    30,158.80x = 45,216.33 × 20,273.56
  4. Step 4: Simplify right side
    30,158.80x = 916,695,979.23
  5. Step 5: Solve for x
    x = 916,695,979.23/30,158.80
  6. Step 6: Final answer
    x = 30,395.64

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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.