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Finding the Fourth Proportional to 31,978.92, 44,126.70 and 18,548.34

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Solution

The fourth proportional to 31,978.92, 44,126.70 and 18,548.34 is: 25,594.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,978.92 : 44,126.70 = 18,548.34 : x
  2. Step 2: Convert to fraction form
    31,978.92/44,126.70 = 18,548.34/x
  3. Step 3: Cross multiply
    31,978.92x = 44,126.70 × 18,548.34
  4. Step 4: Simplify right side
    31,978.92x = 818,477,034.68
  5. Step 5: Solve for x
    x = 818,477,034.68/31,978.92
  6. Step 6: Final answer
    x = 25,594.27

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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.