Home / 20,211.12-30,338.58-12,326.10

Finding the Fourth Proportional to 20,211.12, 30,338.58 and 12,326.10

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Solution

The fourth proportional to 20,211.12, 30,338.58 and 12,326.10 is: 18,502.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,211.12 : 30,338.58 = 12,326.10 : x
  2. Step 2: Convert to fraction form
    20,211.12/30,338.58 = 12,326.10/x
  3. Step 3: Cross multiply
    20,211.12x = 30,338.58 × 12,326.10
  4. Step 4: Simplify right side
    20,211.12x = 373,956,370.94
  5. Step 5: Solve for x
    x = 373,956,370.94/20,211.12
  6. Step 6: Final answer
    x = 18,502.51

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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.