Home / 21,884.85-30,199.85-12,933.19

Finding the Fourth Proportional to 21,884.85, 30,199.85 and 12,933.19

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Solution

The fourth proportional to 21,884.85, 30,199.85 and 12,933.19 is: 17,847.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,884.85 : 30,199.85 = 12,933.19 : x
  2. Step 2: Convert to fraction form
    21,884.85/30,199.85 = 12,933.19/x
  3. Step 3: Cross multiply
    21,884.85x = 30,199.85 × 12,933.19
  4. Step 4: Simplify right side
    21,884.85x = 390,580,322.48
  5. Step 5: Solve for x
    x = 390,580,322.48/21,884.85
  6. Step 6: Final answer
    x = 17,847.06

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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.