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Finding the Fourth Proportional to 15,444, 21,313.12 and 9,392.22

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Solution

The fourth proportional to 15,444, 21,313.12 and 9,392.22 is: 12,961.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,444 : 21,313.12 = 9,392.22 : x
  2. Step 2: Convert to fraction form
    15,444/21,313.12 = 9,392.22/x
  3. Step 3: Cross multiply
    15,444x = 21,313.12 × 9,392.22
  4. Step 4: Simplify right side
    15,444x = 200,177,511.93
  5. Step 5: Solve for x
    x = 200,177,511.93/15,444
  6. Step 6: Final answer
    x = 12,961.51

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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.