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Finding the Fourth Proportional to 22,999.56, 31,739.48 and 12,928.42

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Solution

The fourth proportional to 22,999.56, 31,739.48 and 12,928.42 is: 17,841.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,999.56 : 31,739.48 = 12,928.42 : x
  2. Step 2: Convert to fraction form
    22,999.56/31,739.48 = 12,928.42/x
  3. Step 3: Cross multiply
    22,999.56x = 31,739.48 × 12,928.42
  4. Step 4: Simplify right side
    22,999.56x = 410,341,328.02
  5. Step 5: Solve for x
    x = 410,341,328.02/22,999.56
  6. Step 6: Final answer
    x = 17,841.27

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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.