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Finding the Fourth Proportional to 30,201.28, 45,284.28 and 9,135.04

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Solution

The fourth proportional to 30,201.28, 45,284.28 and 9,135.04 is: 13,697.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,201.28 : 45,284.28 = 9,135.04 : x
  2. Step 2: Convert to fraction form
    30,201.28/45,284.28 = 9,135.04/x
  3. Step 3: Cross multiply
    30,201.28x = 45,284.28 × 9,135.04
  4. Step 4: Simplify right side
    30,201.28x = 413,673,709.17
  5. Step 5: Solve for x
    x = 413,673,709.17/30,201.28
  6. Step 6: Final answer
    x = 13,697.22

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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.