Home / 30,230.52-45,299.64-12,690.84

Finding the Fourth Proportional to 30,230.52, 45,299.64 and 12,690.84

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Solution

The fourth proportional to 30,230.52, 45,299.64 and 12,690.84 is: 19,016.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,230.52 : 45,299.64 = 12,690.84 : x
  2. Step 2: Convert to fraction form
    30,230.52/45,299.64 = 12,690.84/x
  3. Step 3: Cross multiply
    30,230.52x = 45,299.64 × 12,690.84
  4. Step 4: Simplify right side
    30,230.52x = 574,890,483.30
  5. Step 5: Solve for x
    x = 574,890,483.30/30,230.52
  6. Step 6: Final answer
    x = 19,016.89

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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.