Home / 20,135.71-30,186.93-8,883.03

Finding the Fourth Proportional to 20,135.71, 30,186.93 and 8,883.03

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Solution

The fourth proportional to 20,135.71, 30,186.93 and 8,883.03 is: 13,317.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,135.71 : 30,186.93 = 8,883.03 : x
  2. Step 2: Convert to fraction form
    20,135.71/30,186.93 = 8,883.03/x
  3. Step 3: Cross multiply
    20,135.71x = 30,186.93 × 8,883.03
  4. Step 4: Simplify right side
    20,135.71x = 268,151,404.80
  5. Step 5: Solve for x
    x = 268,151,404.80/20,135.71
  6. Step 6: Final answer
    x = 13,317.21

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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.