Home / 20,272.03-30,381.90-8,412.40

Finding the Fourth Proportional to 20,272.03, 30,381.90 and 8,412.40

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Solution

The fourth proportional to 20,272.03, 30,381.90 and 8,412.40 is: 12,607.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,272.03 : 30,381.90 = 8,412.40 : x
  2. Step 2: Convert to fraction form
    20,272.03/30,381.90 = 8,412.40/x
  3. Step 3: Cross multiply
    20,272.03x = 30,381.90 × 8,412.40
  4. Step 4: Simplify right side
    20,272.03x = 255,584,695.56
  5. Step 5: Solve for x
    x = 255,584,695.56/20,272.03
  6. Step 6: Final answer
    x = 12,607.75

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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.