Home / 20,389.46-30,549.30-15,945.42

Finding the Fourth Proportional to 20,389.46, 30,549.30 and 15,945.42

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Solution

The fourth proportional to 20,389.46, 30,549.30 and 15,945.42 is: 23,890.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,389.46 : 30,549.30 = 15,945.42 : x
  2. Step 2: Convert to fraction form
    20,389.46/30,549.30 = 15,945.42/x
  3. Step 3: Cross multiply
    20,389.46x = 30,549.30 × 15,945.42
  4. Step 4: Simplify right side
    20,389.46x = 487,121,419.21
  5. Step 5: Solve for x
    x = 487,121,419.21/20,389.46
  6. Step 6: Final answer
    x = 23,890.84

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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.