Home / 20,158.11-30,226.80-9,055.28

Finding the Fourth Proportional to 20,158.11, 30,226.80 and 9,055.28

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Solution

The fourth proportional to 20,158.11, 30,226.80 and 9,055.28 is: 13,578.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,158.11 : 30,226.80 = 9,055.28 : x
  2. Step 2: Convert to fraction form
    20,158.11/30,226.80 = 9,055.28/x
  3. Step 3: Cross multiply
    20,158.11x = 30,226.80 × 9,055.28
  4. Step 4: Simplify right side
    20,158.11x = 273,711,986.37
  5. Step 5: Solve for x
    x = 273,711,986.37/20,158.11
  6. Step 6: Final answer
    x = 13,578.26

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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.