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Finding the Fourth Proportional to 15,912.52, 21,958.84 and 8,838.76

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Solution

The fourth proportional to 15,912.52, 21,958.84 and 8,838.76 is: 12,197.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,912.52 : 21,958.84 = 8,838.76 : x
  2. Step 2: Convert to fraction form
    15,912.52/21,958.84 = 8,838.76/x
  3. Step 3: Cross multiply
    15,912.52x = 21,958.84 × 8,838.76
  4. Step 4: Simplify right side
    15,912.52x = 194,088,916.64
  5. Step 5: Solve for x
    x = 194,088,916.64/15,912.52
  6. Step 6: Final answer
    x = 12,197.25

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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.