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Finding the Fourth Proportional to 30,495.61, 45,725.34 and 9,429.41

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Solution

The fourth proportional to 30,495.61, 45,725.34 and 9,429.41 is: 14,138.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,495.61 : 45,725.34 = 9,429.41 : x
  2. Step 2: Convert to fraction form
    30,495.61/45,725.34 = 9,429.41/x
  3. Step 3: Cross multiply
    30,495.61x = 45,725.34 × 9,429.41
  4. Step 4: Simplify right side
    30,495.61x = 431,163,092.56
  5. Step 5: Solve for x
    x = 431,163,092.56/30,495.61
  6. Step 6: Final answer
    x = 14,138.53

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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.