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Finding the Fourth Proportional to 30,151.47, 45,221.01 and 11,425.05

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Solution

The fourth proportional to 30,151.47, 45,221.01 and 11,425.05 is: 17,135.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,151.47 : 45,221.01 = 11,425.05 : x
  2. Step 2: Convert to fraction form
    30,151.47/45,221.01 = 11,425.05/x
  3. Step 3: Cross multiply
    30,151.47x = 45,221.01 × 11,425.05
  4. Step 4: Simplify right side
    30,151.47x = 516,652,300.30
  5. Step 5: Solve for x
    x = 516,652,300.30/30,151.47
  6. Step 6: Final answer
    x = 17,135.23

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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.