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Finding the Fourth Proportional to 30,169.20, 45,253.08 and 11,701.20

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Solution

The fourth proportional to 30,169.20, 45,253.08 and 11,701.20 is: 17,551.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,169.20 : 45,253.08 = 11,701.20 : x
  2. Step 2: Convert to fraction form
    30,169.20/45,253.08 = 11,701.20/x
  3. Step 3: Cross multiply
    30,169.20x = 45,253.08 × 11,701.20
  4. Step 4: Simplify right side
    30,169.20x = 529,515,339.70
  5. Step 5: Solve for x
    x = 529,515,339.70/30,169.20
  6. Step 6: Final answer
    x = 17,551.52

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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.