Home / 11,319.56-16,955.40-7,157.42

Finding the Fourth Proportional to 11,319.56, 16,955.40 and 7,157.42

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Solution

The fourth proportional to 11,319.56, 16,955.40 and 7,157.42 is: 10,720.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,319.56 : 16,955.40 = 7,157.42 : x
  2. Step 2: Convert to fraction form
    11,319.56/16,955.40 = 7,157.42/x
  3. Step 3: Cross multiply
    11,319.56x = 16,955.40 × 7,157.42
  4. Step 4: Simplify right side
    11,319.56x = 121,356,919.07
  5. Step 5: Solve for x
    x = 121,356,919.07/11,319.56
  6. Step 6: Final answer
    x = 10,720.99

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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.