Home / 20,265.03-30,371.40-8,405.40

Finding the Fourth Proportional to 20,265.03, 30,371.40 and 8,405.40

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Solution

The fourth proportional to 20,265.03, 30,371.40 and 8,405.40 is: 12,597.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,265.03 : 30,371.40 = 8,405.40 : x
  2. Step 2: Convert to fraction form
    20,265.03/30,371.40 = 8,405.40/x
  3. Step 3: Cross multiply
    20,265.03x = 30,371.40 × 8,405.40
  4. Step 4: Simplify right side
    20,265.03x = 255,283,765.56
  5. Step 5: Solve for x
    x = 255,283,765.56/20,265.03
  6. Step 6: Final answer
    x = 12,597.26

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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.