Home / 20,320.23-30,452.65-12,425.50

Finding the Fourth Proportional to 20,320.23, 30,452.65 and 12,425.50

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Solution

The fourth proportional to 20,320.23, 30,452.65 and 12,425.50 is: 18,621.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,320.23 : 30,452.65 = 12,425.50 : x
  2. Step 2: Convert to fraction form
    20,320.23/30,452.65 = 12,425.50/x
  3. Step 3: Cross multiply
    20,320.23x = 30,452.65 × 12,425.50
  4. Step 4: Simplify right side
    20,320.23x = 378,389,402.58
  5. Step 5: Solve for x
    x = 378,389,402.58/20,320.23
  6. Step 6: Final answer
    x = 18,621.31

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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.