Home / 28,160.22-42,241.74-8,436.90

Finding the Fourth Proportional to 28,160.22, 42,241.74 and 8,436.90

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Solution

The fourth proportional to 28,160.22, 42,241.74 and 8,436.90 is: 12,655.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,160.22 : 42,241.74 = 8,436.90 : x
  2. Step 2: Convert to fraction form
    28,160.22/42,241.74 = 8,436.90/x
  3. Step 3: Cross multiply
    28,160.22x = 42,241.74 × 8,436.90
  4. Step 4: Simplify right side
    28,160.22x = 356,389,336.21
  5. Step 5: Solve for x
    x = 356,389,336.21/28,160.22
  6. Step 6: Final answer
    x = 12,655.77

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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.