Home / 13,306.72-19,960.12-12,494.79

Finding the Fourth Proportional to 13,306.72, 19,960.12 and 12,494.79

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Solution

The fourth proportional to 13,306.72, 19,960.12 and 12,494.79 is: 18,742.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,306.72 : 19,960.12 = 12,494.79 : x
  2. Step 2: Convert to fraction form
    13,306.72/19,960.12 = 12,494.79/x
  3. Step 3: Cross multiply
    13,306.72x = 19,960.12 × 12,494.79
  4. Step 4: Simplify right side
    13,306.72x = 249,397,507.77
  5. Step 5: Solve for x
    x = 249,397,507.77/13,306.72
  6. Step 6: Final answer
    x = 18,742.22

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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.