Home / 30,363.30-45,520.65-12,818.70

Finding the Fourth Proportional to 30,363.30, 45,520.65 and 12,818.70

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Solution

The fourth proportional to 30,363.30, 45,520.65 and 12,818.70 is: 19,217.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,363.30 : 45,520.65 = 12,818.70 : x
  2. Step 2: Convert to fraction form
    30,363.30/45,520.65 = 12,818.70/x
  3. Step 3: Cross multiply
    30,363.30x = 45,520.65 × 12,818.70
  4. Step 4: Simplify right side
    30,363.30x = 583,515,556.16
  5. Step 5: Solve for x
    x = 583,515,556.16/30,363.30
  6. Step 6: Final answer
    x = 19,217.79

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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.