Home / 28,270.40-42,405.60-8,546.90

Finding the Fourth Proportional to 28,270.40, 42,405.60 and 8,546.90

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Solution

The fourth proportional to 28,270.40, 42,405.60 and 8,546.90 is: 12,820.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,270.40 : 42,405.60 = 8,546.90 : x
  2. Step 2: Convert to fraction form
    28,270.40/42,405.60 = 8,546.90/x
  3. Step 3: Cross multiply
    28,270.40x = 42,405.60 × 8,546.90
  4. Step 4: Simplify right side
    28,270.40x = 362,436,422.64
  5. Step 5: Solve for x
    x = 362,436,422.64/28,270.40
  6. Step 6: Final answer
    x = 12,820.35

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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.