Home / 20,271.60-30,425.40-11,941.20

Finding the Fourth Proportional to 20,271.60, 30,425.40 and 11,941.20

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Solution

The fourth proportional to 20,271.60, 30,425.40 and 11,941.20 is: 17,922.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,271.60 : 30,425.40 = 11,941.20 : x
  2. Step 2: Convert to fraction form
    20,271.60/30,425.40 = 11,941.20/x
  3. Step 3: Cross multiply
    20,271.60x = 30,425.40 × 11,941.20
  4. Step 4: Simplify right side
    20,271.60x = 363,315,786.48
  5. Step 5: Solve for x
    x = 363,315,786.48/20,271.60
  6. Step 6: Final answer
    x = 17,922.40

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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.