Home / 28,157.88-42,251.22-12,572.04

Finding the Fourth Proportional to 28,157.88, 42,251.22 and 12,572.04

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Solution

The fourth proportional to 28,157.88, 42,251.22 and 12,572.04 is: 18,864.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,157.88 : 42,251.22 = 12,572.04 : x
  2. Step 2: Convert to fraction form
    28,157.88/42,251.22 = 12,572.04/x
  3. Step 3: Cross multiply
    28,157.88x = 42,251.22 × 12,572.04
  4. Step 4: Simplify right side
    28,157.88x = 531,184,027.89
  5. Step 5: Solve for x
    x = 531,184,027.89/28,157.88
  6. Step 6: Final answer
    x = 18,864.49

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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.