Home / 20,560.46-30,840.66-4,978.08

Finding the Fourth Proportional to 20,560.46, 30,840.66 and 4,978.08

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Solution

The fourth proportional to 20,560.46, 30,840.66 and 4,978.08 is: 7,467.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,560.46 : 30,840.66 = 4,978.08 : x
  2. Step 2: Convert to fraction form
    20,560.46/30,840.66 = 4,978.08/x
  3. Step 3: Cross multiply
    20,560.46x = 30,840.66 × 4,978.08
  4. Step 4: Simplify right side
    20,560.46x = 153,527,272.73
  5. Step 5: Solve for x
    x = 153,527,272.73/20,560.46
  6. Step 6: Final answer
    x = 7,467.11

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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.