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Finding the Fourth Proportional to 15,557.46, 21,469.08 and 8,483.88

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Solution

The fourth proportional to 15,557.46, 21,469.08 and 8,483.88 is: 11,707.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,557.46 : 21,469.08 = 8,483.88 : x
  2. Step 2: Convert to fraction form
    15,557.46/21,469.08 = 8,483.88/x
  3. Step 3: Cross multiply
    15,557.46x = 21,469.08 × 8,483.88
  4. Step 4: Simplify right side
    15,557.46x = 182,141,098.43
  5. Step 5: Solve for x
    x = 182,141,098.43/15,557.46
  6. Step 6: Final answer
    x = 11,707.64

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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.