Home / 15,945.21-22,004.40-9,231.20

Finding the Fourth Proportional to 15,945.21, 22,004.40 and 9,231.20

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Solution

The fourth proportional to 15,945.21, 22,004.40 and 9,231.20 is: 12,739.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,945.21 : 22,004.40 = 9,231.20 : x
  2. Step 2: Convert to fraction form
    15,945.21/22,004.40 = 9,231.20/x
  3. Step 3: Cross multiply
    15,945.21x = 22,004.40 × 9,231.20
  4. Step 4: Simplify right side
    15,945.21x = 203,126,907.26
  5. Step 5: Solve for x
    x = 203,126,907.26/15,945.21
  6. Step 6: Final answer
    x = 12,739.06

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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.