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Finding the Fourth Proportional to 15,441.44, 21,309 and 8,367.76

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Solution

The fourth proportional to 15,441.44, 21,309 and 8,367.76 is: 11,547.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,441.44 : 21,309 = 8,367.76 : x
  2. Step 2: Convert to fraction form
    15,441.44/21,309 = 8,367.76/x
  3. Step 3: Cross multiply
    15,441.44x = 21,309 × 8,367.76
  4. Step 4: Simplify right side
    15,441.44x = 178,308,597.84
  5. Step 5: Solve for x
    x = 178,308,597.84/15,441.44
  6. Step 6: Final answer
    x = 11,547.41

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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.