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Finding the Fourth Proportional to 30,253.50, 45,380.25 and 9,477

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Solution

The fourth proportional to 30,253.50, 45,380.25 and 9,477 is: 14,215.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,253.50 : 45,380.25 = 9,477 : x
  2. Step 2: Convert to fraction form
    30,253.50/45,380.25 = 9,477/x
  3. Step 3: Cross multiply
    30,253.50x = 45,380.25 × 9,477
  4. Step 4: Simplify right side
    30,253.50x = 430,068,629.25
  5. Step 5: Solve for x
    x = 430,068,629.25/30,253.50
  6. Step 6: Final answer
    x = 14,215.50

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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.