Home / 13,305.72-19,958.62-12,493.79

Finding the Fourth Proportional to 13,305.72, 19,958.62 and 12,493.79

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Solution

The fourth proportional to 13,305.72, 19,958.62 and 12,493.79 is: 18,740.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,305.72 : 19,958.62 = 12,493.79 : x
  2. Step 2: Convert to fraction form
    13,305.72/19,958.62 = 12,493.79/x
  3. Step 3: Cross multiply
    13,305.72x = 19,958.62 × 12,493.79
  4. Step 4: Simplify right side
    13,305.72x = 249,358,806.97
  5. Step 5: Solve for x
    x = 249,358,806.97/13,305.72
  6. Step 6: Final answer
    x = 18,740.72

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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.