Home / 20,118.64-30,177.96-5,328.71

Finding the Fourth Proportional to 20,118.64, 30,177.96 and 5,328.71

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Solution

The fourth proportional to 20,118.64, 30,177.96 and 5,328.71 is: 7,993.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,118.64 : 30,177.96 = 5,328.71 : x
  2. Step 2: Convert to fraction form
    20,118.64/30,177.96 = 5,328.71/x
  3. Step 3: Cross multiply
    20,118.64x = 30,177.96 × 5,328.71
  4. Step 4: Simplify right side
    20,118.64x = 160,809,639.39
  5. Step 5: Solve for x
    x = 160,809,639.39/20,118.64
  6. Step 6: Final answer
    x = 7,993.07

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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.