Home / 30,379.59-45,558.45-12,850.65

Finding the Fourth Proportional to 30,379.59, 45,558.45 and 12,850.65

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Solution

The fourth proportional to 30,379.59, 45,558.45 and 12,850.65 is: 19,271.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,379.59 : 45,558.45 = 12,850.65 : x
  2. Step 2: Convert to fraction form
    30,379.59/45,558.45 = 12,850.65/x
  3. Step 3: Cross multiply
    30,379.59x = 45,558.45 × 12,850.65
  4. Step 4: Simplify right side
    30,379.59x = 585,455,695.49
  5. Step 5: Solve for x
    x = 585,455,695.49/30,379.59
  6. Step 6: Final answer
    x = 19,271.35

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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.