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Finding the Fourth Proportional to 13,388.96, 20,064.20 and 7,533.20

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Solution

The fourth proportional to 13,388.96, 20,064.20 and 7,533.20 is: 11,288.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,388.96 : 20,064.20 = 7,533.20 : x
  2. Step 2: Convert to fraction form
    13,388.96/20,064.20 = 7,533.20/x
  3. Step 3: Cross multiply
    13,388.96x = 20,064.20 × 7,533.20
  4. Step 4: Simplify right side
    13,388.96x = 151,147,700.43
  5. Step 5: Solve for x
    x = 151,147,700.43/13,388.96
  6. Step 6: Final answer
    x = 11,288.98

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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.