Home / 13,487.69-20,231.54-4,720.57

Finding the Fourth Proportional to 13,487.69, 20,231.54 and 4,720.57

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Solution

The fourth proportional to 13,487.69, 20,231.54 and 4,720.57 is: 7,080.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,487.69 : 20,231.54 = 4,720.57 : x
  2. Step 2: Convert to fraction form
    13,487.69/20,231.54 = 4,720.57/x
  3. Step 3: Cross multiply
    13,487.69x = 20,231.54 × 4,720.57
  4. Step 4: Simplify right side
    13,487.69x = 95,504,400.78
  5. Step 5: Solve for x
    x = 95,504,400.78/13,487.69
  6. Step 6: Final answer
    x = 7,080.86

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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.