Home / 9,420.60-14,145.30-7,231.80

Finding the Fourth Proportional to 9,420.60, 14,145.30 and 7,231.80

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Solution

The fourth proportional to 9,420.60, 14,145.30 and 7,231.80 is: 10,858.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,420.60 : 14,145.30 = 7,231.80 : x
  2. Step 2: Convert to fraction form
    9,420.60/14,145.30 = 7,231.80/x
  3. Step 3: Cross multiply
    9,420.60x = 14,145.30 × 7,231.80
  4. Step 4: Simplify right side
    9,420.60x = 102,295,980.54
  5. Step 5: Solve for x
    x = 102,295,980.54/9,420.60
  6. Step 6: Final answer
    x = 10,858.75

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1.5x scale

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.