Home / 11,157.90-15,397.47-6,679.05

Finding the Fourth Proportional to 11,157.90, 15,397.47 and 6,679.05

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Solution

The fourth proportional to 11,157.90, 15,397.47 and 6,679.05 is: 9,216.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,157.90 : 15,397.47 = 6,679.05 : x
  2. Step 2: Convert to fraction form
    11,157.90/15,397.47 = 6,679.05/x
  3. Step 3: Cross multiply
    11,157.90x = 15,397.47 × 6,679.05
  4. Step 4: Simplify right side
    11,157.90x = 102,840,472.00
  5. Step 5: Solve for x
    x = 102,840,472.00/11,157.90
  6. Step 6: Final answer
    x = 9,216.83

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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.