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Finding the Fourth Proportional to 21,806.46, 30,094.47 and 12,375.63

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Solution

The fourth proportional to 21,806.46, 30,094.47 and 12,375.63 is: 17,079.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,806.46 : 30,094.47 = 12,375.63 : x
  2. Step 2: Convert to fraction form
    21,806.46/30,094.47 = 12,375.63/x
  3. Step 3: Cross multiply
    21,806.46x = 30,094.47 × 12,375.63
  4. Step 4: Simplify right side
    21,806.46x = 372,438,025.77
  5. Step 5: Solve for x
    x = 372,438,025.77/21,806.46
  6. Step 6: Final answer
    x = 17,079.25

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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.