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Finding the Fourth Proportional to 22,999.98, 31,739.25 and 12,928.17

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Solution

The fourth proportional to 22,999.98, 31,739.25 and 12,928.17 is: 17,840.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,999.98 : 31,739.25 = 12,928.17 : x
  2. Step 2: Convert to fraction form
    22,999.98/31,739.25 = 12,928.17/x
  3. Step 3: Cross multiply
    22,999.98x = 31,739.25 × 12,928.17
  4. Step 4: Simplify right side
    22,999.98x = 410,330,419.67
  5. Step 5: Solve for x
    x = 410,330,419.67/22,999.98
  6. Step 6: Final answer
    x = 17,840.47

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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.