Home / 20,567.39-30,850.81-4,985.15

Finding the Fourth Proportional to 20,567.39, 30,850.81 and 4,985.15

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Solution

The fourth proportional to 20,567.39, 30,850.81 and 4,985.15 is: 7,477.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,567.39 : 30,850.81 = 4,985.15 : x
  2. Step 2: Convert to fraction form
    20,567.39/30,850.81 = 4,985.15/x
  3. Step 3: Cross multiply
    20,567.39x = 30,850.81 × 4,985.15
  4. Step 4: Simplify right side
    20,567.39x = 153,795,748.75
  5. Step 5: Solve for x
    x = 153,795,748.75/20,567.39
  6. Step 6: Final answer
    x = 7,477.65

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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.