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Finding the Fourth Proportional to 36,216.60, 54,324.90 and 9,921.30

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Solution

The fourth proportional to 36,216.60, 54,324.90 and 9,921.30 is: 14,881.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,216.60 : 54,324.90 = 9,921.30 : x
  2. Step 2: Convert to fraction form
    36,216.60/54,324.90 = 9,921.30/x
  3. Step 3: Cross multiply
    36,216.60x = 54,324.90 × 9,921.30
  4. Step 4: Simplify right side
    36,216.60x = 538,973,630.37
  5. Step 5: Solve for x
    x = 538,973,630.37/36,216.60
  6. Step 6: Final answer
    x = 14,881.95

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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.