Home / 20,385.34-30,528.17-12,040.58

Finding the Fourth Proportional to 20,385.34, 30,528.17 and 12,040.58

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Solution

The fourth proportional to 20,385.34, 30,528.17 and 12,040.58 is: 18,031.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,385.34 : 30,528.17 = 12,040.58 : x
  2. Step 2: Convert to fraction form
    20,385.34/30,528.17 = 12,040.58/x
  3. Step 3: Cross multiply
    20,385.34x = 30,528.17 × 12,040.58
  4. Step 4: Simplify right side
    20,385.34x = 367,576,873.14
  5. Step 5: Solve for x
    x = 367,576,873.14/20,385.34
  6. Step 6: Final answer
    x = 18,031.43

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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.