Home / 18,515.10-25,550.42-10,556.58

Finding the Fourth Proportional to 18,515.10, 25,550.42 and 10,556.58

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Solution

The fourth proportional to 18,515.10, 25,550.42 and 10,556.58 is: 14,567.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,515.10 : 25,550.42 = 10,556.58 : x
  2. Step 2: Convert to fraction form
    18,515.10/25,550.42 = 10,556.58/x
  3. Step 3: Cross multiply
    18,515.10x = 25,550.42 × 10,556.58
  4. Step 4: Simplify right side
    18,515.10x = 269,725,052.76
  5. Step 5: Solve for x
    x = 269,725,052.76/18,515.10
  6. Step 6: Final answer
    x = 14,567.84

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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.