Home / 28,182.88-42,259.68-12,381.44

Finding the Fourth Proportional to 28,182.88, 42,259.68 and 12,381.44

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Solution

The fourth proportional to 28,182.88, 42,259.68 and 12,381.44 is: 18,565.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,182.88 : 42,259.68 = 12,381.44 : x
  2. Step 2: Convert to fraction form
    28,182.88/42,259.68 = 12,381.44/x
  3. Step 3: Cross multiply
    28,182.88x = 42,259.68 × 12,381.44
  4. Step 4: Simplify right side
    28,182.88x = 523,235,692.34
  5. Step 5: Solve for x
    x = 523,235,692.34/28,182.88
  6. Step 6: Final answer
    x = 18,565.73

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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.