Home / 13,613.45-20,262.78-13,307.27

Finding the Fourth Proportional to 13,613.45, 20,262.78 and 13,307.27

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Solution

The fourth proportional to 13,613.45, 20,262.78 and 13,307.27 is: 19,807.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,613.45 : 20,262.78 = 13,307.27 : x
  2. Step 2: Convert to fraction form
    13,613.45/20,262.78 = 13,307.27/x
  3. Step 3: Cross multiply
    13,613.45x = 20,262.78 × 13,307.27
  4. Step 4: Simplify right side
    13,613.45x = 269,642,183.10
  5. Step 5: Solve for x
    x = 269,642,183.10/13,613.45
  6. Step 6: Final answer
    x = 19,807.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.