Home / 28,160.84-42,241.26-12,589.32

Finding the Fourth Proportional to 28,160.84, 42,241.26 and 12,589.32

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Solution

The fourth proportional to 28,160.84, 42,241.26 and 12,589.32 is: 18,883.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,160.84 : 42,241.26 = 12,589.32 : x
  2. Step 2: Convert to fraction form
    28,160.84/42,241.26 = 12,589.32/x
  3. Step 3: Cross multiply
    28,160.84x = 42,241.26 × 12,589.32
  4. Step 4: Simplify right side
    28,160.84x = 531,788,739.34
  5. Step 5: Solve for x
    x = 531,788,739.34/28,160.84
  6. Step 6: Final answer
    x = 18,883.98

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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.