Home / 30,288.60-45,429.12-8,103.24

Finding the Fourth Proportional to 30,288.60, 45,429.12 and 8,103.24

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Solution

The fourth proportional to 30,288.60, 45,429.12 and 8,103.24 is: 12,153.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,288.60 : 45,429.12 = 8,103.24 : x
  2. Step 2: Convert to fraction form
    30,288.60/45,429.12 = 8,103.24/x
  3. Step 3: Cross multiply
    30,288.60x = 45,429.12 × 8,103.24
  4. Step 4: Simplify right side
    30,288.60x = 368,123,062.35
  5. Step 5: Solve for x
    x = 368,123,062.35/30,288.60
  6. Step 6: Final answer
    x = 12,153.85

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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.