Home / 30,155.96-45,234.06-12,613.49

Finding the Fourth Proportional to 30,155.96, 45,234.06 and 12,613.49

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Solution

The fourth proportional to 30,155.96, 45,234.06 and 12,613.49 is: 18,920.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,155.96 : 45,234.06 = 12,613.49 : x
  2. Step 2: Convert to fraction form
    30,155.96/45,234.06 = 12,613.49/x
  3. Step 3: Cross multiply
    30,155.96x = 45,234.06 × 12,613.49
  4. Step 4: Simplify right side
    30,155.96x = 570,559,137.30
  5. Step 5: Solve for x
    x = 570,559,137.30/30,155.96
  6. Step 6: Final answer
    x = 18,920.28

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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.