Home / 28,565.12-42,850.55-9,842.72

Finding the Fourth Proportional to 28,565.12, 42,850.55 and 9,842.72

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Solution

The fourth proportional to 28,565.12, 42,850.55 and 9,842.72 is: 14,765.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,565.12 : 42,850.55 = 9,842.72 : x
  2. Step 2: Convert to fraction form
    28,565.12/42,850.55 = 9,842.72/x
  3. Step 3: Cross multiply
    28,565.12x = 42,850.55 × 9,842.72
  4. Step 4: Simplify right side
    28,565.12x = 421,765,775.85
  5. Step 5: Solve for x
    x = 421,765,775.85/28,565.12
  6. Step 6: Final answer
    x = 14,765.06

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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.