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Finding the Fourth Proportional to 9,891.18, 13,719.78 and 9,536.67

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Solution

The fourth proportional to 9,891.18, 13,719.78 and 9,536.67 is: 13,228.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,891.18 : 13,719.78 = 9,536.67 : x
  2. Step 2: Convert to fraction form
    9,891.18/13,719.78 = 9,536.67/x
  3. Step 3: Cross multiply
    9,891.18x = 13,719.78 × 9,536.67
  4. Step 4: Simplify right side
    9,891.18x = 130,841,014.33
  5. Step 5: Solve for x
    x = 130,841,014.33/9,891.18
  6. Step 6: Final answer
    x = 13,228.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.