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Finding the Fourth Proportional to 30,149.28, 45,224.30 and 11,424.28

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Solution

The fourth proportional to 30,149.28, 45,224.30 and 11,424.28 is: 17,136.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,149.28 : 45,224.30 = 11,424.28 : x
  2. Step 2: Convert to fraction form
    30,149.28/45,224.30 = 11,424.28/x
  3. Step 3: Cross multiply
    30,149.28x = 45,224.30 × 11,424.28
  4. Step 4: Simplify right side
    30,149.28x = 516,655,066.00
  5. Step 5: Solve for x
    x = 516,655,066.00/30,149.28
  6. Step 6: Final answer
    x = 17,136.56

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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.