Home / 11,150.40-15,392.64-7,173.72

Finding the Fourth Proportional to 11,150.40, 15,392.64 and 7,173.72

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Solution

The fourth proportional to 11,150.40, 15,392.64 and 7,173.72 is: 9,903.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,150.40 : 15,392.64 = 7,173.72 : x
  2. Step 2: Convert to fraction form
    11,150.40/15,392.64 = 7,173.72/x
  3. Step 3: Cross multiply
    11,150.40x = 15,392.64 × 7,173.72
  4. Step 4: Simplify right side
    11,150.40x = 110,422,489.42
  5. Step 5: Solve for x
    x = 110,422,489.42/11,150.40
  6. Step 6: Final answer
    x = 9,903.01

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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.