Home / 9,221.20-13,821.56-5,528.40

Finding the Fourth Proportional to 9,221.20, 13,821.56 and 5,528.40

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Solution

The fourth proportional to 9,221.20, 13,821.56 and 5,528.40 is: 8,286.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,221.20 : 13,821.56 = 5,528.40 : x
  2. Step 2: Convert to fraction form
    9,221.20/13,821.56 = 5,528.40/x
  3. Step 3: Cross multiply
    9,221.20x = 13,821.56 × 5,528.40
  4. Step 4: Simplify right side
    9,221.20x = 76,411,112.30
  5. Step 5: Solve for x
    x = 76,411,112.30/9,221.20
  6. Step 6: Final answer
    x = 8,286.46

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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.