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Finding the Fourth Proportional to 21,375.84, 32,059.16 and 8,225.76

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Solution

The fourth proportional to 21,375.84, 32,059.16 and 8,225.76 is: 12,336.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,375.84 : 32,059.16 = 8,225.76 : x
  2. Step 2: Convert to fraction form
    21,375.84/32,059.16 = 8,225.76/x
  3. Step 3: Cross multiply
    21,375.84x = 32,059.16 × 8,225.76
  4. Step 4: Simplify right side
    21,375.84x = 263,710,955.96
  5. Step 5: Solve for x
    x = 263,710,955.96/21,375.84
  6. Step 6: Final answer
    x = 12,336.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.