Home / 11,157.21-15,395.40-6,680.07

Finding the Fourth Proportional to 11,157.21, 15,395.40 and 6,680.07

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Solution

The fourth proportional to 11,157.21, 15,395.40 and 6,680.07 is: 9,217.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,157.21 : 15,395.40 = 6,680.07 : x
  2. Step 2: Convert to fraction form
    11,157.21/15,395.40 = 6,680.07/x
  3. Step 3: Cross multiply
    11,157.21x = 15,395.40 × 6,680.07
  4. Step 4: Simplify right side
    11,157.21x = 102,842,349.68
  5. Step 5: Solve for x
    x = 102,842,349.68/11,157.21
  6. Step 6: Final answer
    x = 9,217.57

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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.