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Finding the Fourth Proportional to 11,448, 15,798.24 and 6,480

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Solution

The fourth proportional to 11,448, 15,798.24 and 6,480 is: 8,942.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,448 : 15,798.24 = 6,480 : x
  2. Step 2: Convert to fraction form
    11,448/15,798.24 = 6,480/x
  3. Step 3: Cross multiply
    11,448x = 15,798.24 × 6,480
  4. Step 4: Simplify right side
    11,448x = 102,372,595.20
  5. Step 5: Solve for x
    x = 102,372,595.20/11,448
  6. Step 6: Final answer
    x = 8,942.40

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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.