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Finding the Fourth Proportional to 11,309.58, 15,611.31 and 7,341.39

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Solution

The fourth proportional to 11,309.58, 15,611.31 and 7,341.39 is: 10,133.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,309.58 : 15,611.31 = 7,341.39 : x
  2. Step 2: Convert to fraction form
    11,309.58/15,611.31 = 7,341.39/x
  3. Step 3: Cross multiply
    11,309.58x = 15,611.31 × 7,341.39
  4. Step 4: Simplify right side
    11,309.58x = 114,608,715.12
  5. Step 5: Solve for x
    x = 114,608,715.12/11,309.58
  6. Step 6: Final answer
    x = 10,133.77

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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.