Home / 28,178.40-42,181.20-16,456.80

Finding the Fourth Proportional to 28,178.40, 42,181.20 and 16,456.80

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Solution

The fourth proportional to 28,178.40, 42,181.20 and 16,456.80 is: 24,634.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,178.40 : 42,181.20 = 16,456.80 : x
  2. Step 2: Convert to fraction form
    28,178.40/42,181.20 = 16,456.80/x
  3. Step 3: Cross multiply
    28,178.40x = 42,181.20 × 16,456.80
  4. Step 4: Simplify right side
    28,178.40x = 694,167,572.16
  5. Step 5: Solve for x
    x = 694,167,572.16/28,178.40
  6. Step 6: Final answer
    x = 24,634.74

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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.