Home / 11,133.30-15,379.72-9,739.08

Finding the Fourth Proportional to 11,133.30, 15,379.72 and 9,739.08

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Solution

The fourth proportional to 11,133.30, 15,379.72 and 9,739.08 is: 13,453.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,133.30 : 15,379.72 = 9,739.08 : x
  2. Step 2: Convert to fraction form
    11,133.30/15,379.72 = 9,739.08/x
  3. Step 3: Cross multiply
    11,133.30x = 15,379.72 × 9,739.08
  4. Step 4: Simplify right side
    11,133.30x = 149,784,323.46
  5. Step 5: Solve for x
    x = 149,784,323.46/11,133.30
  6. Step 6: Final answer
    x = 13,453.72

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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.