Home / 20,214.80-30,322.20-13,216.40

Finding the Fourth Proportional to 20,214.80, 30,322.20 and 13,216.40

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Solution

The fourth proportional to 20,214.80, 30,322.20 and 13,216.40 is: 19,824.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,214.80 : 30,322.20 = 13,216.40 : x
  2. Step 2: Convert to fraction form
    20,214.80/30,322.20 = 13,216.40/x
  3. Step 3: Cross multiply
    20,214.80x = 30,322.20 × 13,216.40
  4. Step 4: Simplify right side
    20,214.80x = 400,750,324.08
  5. Step 5: Solve for x
    x = 400,750,324.08/20,214.80
  6. Step 6: Final answer
    x = 19,824.60

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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.