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Finding the Fourth Proportional to 30,418.61, 45,628.02 and 9,358.50

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Solution

The fourth proportional to 30,418.61, 45,628.02 and 9,358.50 is: 14,037.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,418.61 : 45,628.02 = 9,358.50 : x
  2. Step 2: Convert to fraction form
    30,418.61/45,628.02 = 9,358.50/x
  3. Step 3: Cross multiply
    30,418.61x = 45,628.02 × 9,358.50
  4. Step 4: Simplify right side
    30,418.61x = 427,009,825.17
  5. Step 5: Solve for x
    x = 427,009,825.17/30,418.61
  6. Step 6: Final answer
    x = 14,037.78

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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.