Home / 21,884.31-30,199.63-12,324.69

Finding the Fourth Proportional to 21,884.31, 30,199.63 and 12,324.69

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Solution

The fourth proportional to 21,884.31, 30,199.63 and 12,324.69 is: 17,007.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,884.31 : 30,199.63 = 12,324.69 : x
  2. Step 2: Convert to fraction form
    21,884.31/30,199.63 = 12,324.69/x
  3. Step 3: Cross multiply
    21,884.31x = 30,199.63 × 12,324.69
  4. Step 4: Simplify right side
    21,884.31x = 372,201,077.86
  5. Step 5: Solve for x
    x = 372,201,077.86/21,884.31
  6. Step 6: Final answer
    x = 17,007.67

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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.