Home / 9,420.75-13,000.62-5,171.84

Finding the Fourth Proportional to 9,420.75, 13,000.62 and 5,171.84

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Solution

The fourth proportional to 9,420.75, 13,000.62 and 5,171.84 is: 7,137.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,420.75 : 13,000.62 = 5,171.84 : x
  2. Step 2: Convert to fraction form
    9,420.75/13,000.62 = 5,171.84/x
  3. Step 3: Cross multiply
    9,420.75x = 13,000.62 × 5,171.84
  4. Step 4: Simplify right side
    9,420.75x = 67,237,126.54
  5. Step 5: Solve for x
    x = 67,237,126.54/9,420.75
  6. Step 6: Final answer
    x = 7,137.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.