Home / 14,913.72-20,613.84-13,107.65

Finding the Fourth Proportional to 14,913.72, 20,613.84 and 13,107.65

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Solution

The fourth proportional to 14,913.72, 20,613.84 and 13,107.65 is: 18,117.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,913.72 : 20,613.84 = 13,107.65 : x
  2. Step 2: Convert to fraction form
    14,913.72/20,613.84 = 13,107.65/x
  3. Step 3: Cross multiply
    14,913.72x = 20,613.84 × 13,107.65
  4. Step 4: Simplify right side
    14,913.72x = 270,198,979.36
  5. Step 5: Solve for x
    x = 270,198,979.36/14,913.72
  6. Step 6: Final answer
    x = 18,117.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.