Home / 13,995.90-20,988.96-4,132.56

Finding the Fourth Proportional to 13,995.90, 20,988.96 and 4,132.56

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Solution

The fourth proportional to 13,995.90, 20,988.96 and 4,132.56 is: 6,197.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,995.90 : 20,988.96 = 4,132.56 : x
  2. Step 2: Convert to fraction form
    13,995.90/20,988.96 = 4,132.56/x
  3. Step 3: Cross multiply
    13,995.90x = 20,988.96 × 4,132.56
  4. Step 4: Simplify right side
    13,995.90x = 86,738,136.54
  5. Step 5: Solve for x
    x = 86,738,136.54/13,995.90
  6. Step 6: Final answer
    x = 6,197.40

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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.